REPAIRING / SERVICING TV RUBIN RB-22SL1UF

 Technical description and composition of the RUBIN RB-22SL1UF TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-22SL1UF
Chassis / Version: MST6M181-T7S 471-01A2-61702G rev A2
Panel: LTM215HT04 led // LM230WF5
LED driver (backlight): // GT-02 471R1015 KB6160
PWM LED driver: MP3389EF // OB3362VP
MOSFET LED driver: ME4457-G (8), MEI5N60-G
Trans LED driver: 330
Power Supply (PSU): K-40L1 K_L-NM1 465-01A2-21402G
PWM Power: OB5269CP (8)
MOSFET Power: SW7N65
MainBoard: MST6M181-T7S 471-015A-61702G F50CT-2DD-e (x)
IC MainBoard: YD1517P, IT6633E-P, 3502M,
Specifications RB-22SL1UF
RUBIN RB-22SL1UF
General recommendations for TV LCD LED repair
It is advisable to start repairing the RUBIN RB-22SL1UF WH TV with a careful external examination of both internal and external elements. In some cases, visible external damage to elements can prompt the directions of troubleshooting and localization of the defect even before the necessary measurements are taken at the control points of electronic circuit assemblies. In most cases, the repairman can guess about the causes of the defect and the possible consequences by the characteristic signs of typical defects in TVs, for example, the formed ring cracks in the soldering of the element terminals, swollen capacitors of the rectifier filter, charred resistors and other circuit elements.
In the complete absence of any signs of operability, when RUBIN RB-22SL1UF does not turn on and does not signal anything with control lamps on the panel, there is a possibility of malfunction of the power supply module K_L-NM1 465-01A2-21402G K-40L1 of the TV. The power supply regulator of the control processor on the motherboard may also be faulty with the same manifestations. When repairing a power supply, it is advisable to start diagnostics with checking the mains fuse and electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a break in the fuse, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply unit. First of all, it is necessary to check the diodes of the mains voltage rectifier bridge and the power switch (keys) of the SW7N65 converter.
Mos-Fet switches used in switching power supplies (SMPS) rarely fail without reasons that must be looked for by checking other circuit elements. Breakdown is often caused by malfunctions of electrolytic capacitors or semiconductor elements in the primary circuit, or breakdown of resistors in stabilization circuits. The PWM controller microcircuit B5111A OB5269CP (8) can also cause the breakdown of the power switch of the converter.
If, when you turn on RUBIN RB-22SL1UF, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the LED circuit of the LTM215HT04 led // LM230WF5 panel backlight, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
Often, in the absence of backlight, disassembly of the panel is required. It is necessary to check the serviceability of the LED transitions, as well as the reliability of the contact connections in the lines and connectors.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is needed to open PN junctions connected in series.
If the motherboard MST6M181-T7S 471-015A-61702G F50CT-2DD-e (x) TCL1108201486 is faulty, first of all it is necessary to check all linear stabilizers or power converters of its chips, and also, if necessary, update the software. Sometimes it is possible to check the health of the MB only by replacing it.

Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace elements YD1517P, IT6633E-P, 3502M,. BGA chip faults are usually easy to detect by warm-up.

Owners and users of the RUBIN RB-22SL1UF TV need to remember that self-repair without special knowledge, skills and qualifications can be fraught with negative consequences that can lead to the complete non-repairability of the device!

 DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-22SL1UF, Main Board: MST6M182VG-T7S, Cpu: MST6E182VG-LF-Z1, Spi Flash: 25Q32 Panel: LM215WF4 (TL) (E7)

To reduce the backlight current in LED drivers with a PWM controller MP3389EF (MP3389), or its analog OB3362VP (28 pin), the total resistance of the resistors from pin 9 (ISET) to the case should be proportionally increased. The maximum current in each of the 12 channels (in milliamperes) for the resistance Rset (in kilo-ohms) is determined from the ratio 1000 * 1.22V / Rset. When the channels are connected in parallel, the currents are summed up.

Additional MainBoard Repair
The appearance of the MainBoard MST6M181-T7S is shown in the figure below:
The MST6M181-T7S motherboard uses an MST6M181VS-LF-Z1 processor combined with a scaler, external random access memory (RAM) DDR Winbond W9425G6JH and SPI flash ROM 25Q32.

It is advisable to start MainBoard repair by checking the supply voltages of the linear stabilizers and voltage converters required to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. The power supply of the LCD panel is 5V or 12V, depending on the type of panel used, it can be measured directly at the LVDS connector. In cases where the TV does not come out of Stand-by mode, does not respond to the remote control and control buttons in the presence of all supply voltages, you should update the SPI Flash software.

MST6M181-T7S can be used in TVs:
ERISSON 22LEK14 (Panel M215H3-LA1 REV.C1), ROLSEN RL-17L1002U (Panel LTN173KT01-A01), ROLSEN RL-17L1002U (Panel LTN173KT02 ), ROLSEN RL-19L1002U (Panel 19 "), ROLSEN RL-22L1002UF (Panel LTM215HT04 B2 (5v)), ROLSEN RL-23L1002UF (Panel M230WA01-ED G2 EE01 LED), RUBIN RB-19SL1U (Panel 19 "), RUBIN RB-22SL1UF (Panel LTM215HT04 led), RUBIN RB-23SL1UF (Panel 23 ").
External view of the power supply
Key features of the RUBIN RB-22SL1UF device:
Installed matrix (LED panel) LTM215HT04 led or LM230WF5.

A LED driver is used to power the backlight LEDs, it is controlled by the PWM controller MP3389EF // OB3362VP. The transformer 330 is installed in the converter of the LED driver. The keys of the type ME4457-G (8), MEI5N60-G are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-22SL1UF TV is carried out by the K-40L1 power module, or its analogs using OB5269CP microcircuits (8) and power switches of the SW7N65 type.
MainBoard - the main board (motherboard) is an MST6M181-T7S module, using YD1517P, IT6633E-P, 3502M chips, and others.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTM215HT04-V
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Lamp Type: 10S3P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-22SL1UF TV with LCD display LTM215HT04, 22 "(56 cm) 16: 9. The LED panels of this TV are equipped with edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal formation is performed in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
The power of the sound system is 6 W (2x3 W), provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, S-Video, component, VGA, HDMI x2, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the network is 35 W.
Dimensions: without stand 535x394x36 mm.
TV weight: without stand: 5 kg.
Attention! The LTM215HT04 panel of the RUBIN RB-22SL1UF LED LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-24S2UFD

Technical description and composition of the RUBIN RB-24S2UFD TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-24S2UFD
Panel: V236H1-P01 // TB236F101-A
T-CON: HM236WU1-100 X0.0
LED driver (backlight): MAK2592 V1.1 LE236 MKN_LE2360A-V02
PWM LED driver: 144B2 EUP2589 (30)
MOSFET LED driver: STU606S (3)
Power Supply (PSU): LK-SP104804B
MainBoard: T.MS6M181.7A 11453, DVD 2013 V2.0
IC MainBoard: YD1517, MST6M181VF-LF-Z1,
Tuner: SDT-3SP512-36
Control: IR: MST206 REV: B
Specifications RB-24S2UFD
RUBIN RB-24S2UFD
General recommendations for TV LCD LED repair
It is advisable to start repairing electronic devices, including the RUBIN RB-24S2UFD TV, with an external examination of its external and internal elements. Often, according to certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before taking the necessary measurements, which will help determine a further algorithm for troubleshooting and localizing a defect. If ring cracks are found in the soldering of the terminals of the elements or broken connecting tracks, swollen capacitors or charred resistors - all this may be characteristic signs of the causes or consequences of an already known typical malfunction.
If the TV does not turn on, none of the indicators on its front panel are on or blinking. Also, if the TV does not respond to the remote control and buttons, does not emit any sounds or any signs of operability when turned on, there is a certain probability that the LK-SP104804B power supply module is faulty and needs repair. Sometimes a problem with similar manifestations can occur only in the absence of processor power, which is typical for certain RUBIN models. When diagnosing and repairing the power supply, first of all, replace the swollen capacitors of the secondary rectifier filter and check the fuse and, if it is broken, the cause must be identified. Often in such cases an avalanche (thermal) breakdown is detected in the power semiconductor elements of the module - rectifier diodes and transistors in the primary circuit.
As a rule, switches in switching power supplies (SMPS) are quite reliable and rarely fail without reasons that should be looked for by checking other circuit components - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM microcircuit is checked by replacing it with a known good one.
If the RUBIN RB-24S2UFD has no image, but there is sound and the TV is controlled from the remote control, there is likely a malfunction in the X ?? panel backlight circuits. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to make sure that the electrolytic capacitors of the rectifier filter supplying the LED driver are in good working order, and check the LEDs by connecting those that are known to be working for diagnostics.
In most cases of lack of backlighting, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or more LEDs do not work in one line, then they are broken and should be replaced.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
Repair or diagnostics of the motherboard T.MS6M181.7A 11453, DVD 2013 V2.0 should start with checking the stabilizers or power converters of its microcircuits. If necessary, you should update the software (software).
When repairing the MB board, you need to check its components YD1517, MST6M181VF-LF-Z1,. Defective elements should be replaced. If BGA chips are installed, their failure is usually localized by warming up.
The malfunction of the SDT-3SP512-36 tuner is established after checking the software and all supply voltages at its terminals, including the supply voltage of the varicaps (30-33V).

Attention! Users and owners of RB-24S2UFD TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from attempting to repair themselves in order to avoid negative consequences that may lead to complete non-repairability of the device.

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-24S2UFD , Main: T.MS6M181.7A 11453 , DVD 2013 V2.0, Panel: V236H1-P01

 The appearance of the MainBoard T.MS6M181.7A is shown in the figure below:

Repairing the motherboard T.MS6M181.7A, which uses the multifunctional processor MST6M181VS, combined with a scaler, it is advisable to start by checking the stand-by power supply, which is implemented using a separate 3.3V linear stabilizer. Further, in the operating mode, you should check the operability of linear stabilizers or voltage converters required to provide power to the processor nodes: 1.2V, 2.5V, 3.3V. DDR W9425G6JH memory requires 2.5V voltage. In the presence of a backlight and no image, it is advisable to measure the power supply of the LCD panel 5V or 12V, depending on the type of panel used, directly on the LVDS connector. If the TV does not come out of Stand-by, does not respond to the remote control and control buttons, you should update the SPI FLASH software.

T.MS6M181.7A can be used in TVs:
AKAI LEA-19V07P (Panel M185B3-LC1), AKAI LEA-22V07P (Panel M215HGE-L10 Rev.C1), ERISSON 22LEE01 (Panel CLAA215FA04), FUSION FLTV-D22H11 (Panel LQ215M1LGN2), HYUNDAI H-LED19V13 (Panel CX185LEDM ), HYUNDAI H-LED15V7 (Panel N156B6-L0B Rev. C1 / Rev. C2), HYUNDAI H-LEDVD24V10 (Panel M236H3-LA2), RUBIN RB-19S2U (Panel HT185WX1-100), RUBIN RB-22S2UF (Panel LE2360A-V02), RUBIN RB-22S2UFD (Panel 22 дюйма), RUBIN RB-24S2UFD (Panel V236H1-P01).
External view of the power supply
The main features of the RUBIN RB-24S2UFD device:
A matrix (LED panel) V236H1-P01 or TB236F101-A is installed.
The matrix control uses the Timing Controller (T-CON) HM236WU1-100.
To power the backlight LEDs, the MAK2592 LED driver is used, controlled by the 144B2 EUP2589 PWM controller (30). The keys of the STU606S type are used as power elements of the LED driver (3).
The formation of the necessary supply voltages for all nodes of the RUBIN RB-24S2UFD TV is carried out by the LK-SP104804B power module, or its analogs.
MainBoard - the main board (motherboard) is a T.MS6M181.7A module, using YD1517, MST6M181VF-LF-Z1 microcircuits, and others.
The SDT-3SP512-36 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V236H1-P01
Type: a-Si TFT-LCD, CELL
Diagonal size: 23.6 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 521.28x293.22 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 800: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 1.5 / 3.5 (Tr / Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-24S2UFD TV with LCD V236H1-P01, 24 "(61 cm) diagonal in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 100,000: 1 is achieved by special control of LED operation The LED panel of this TV is equipped with Edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM Graphic processing and digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p Supported multimedia file formats: MP3, WMA, MPEG4, VideoCD, Picture CD, JPEG.
The power of the sound system is 6 W (2x3 W), provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 48 watts.
Overall dimensions: 623x463x120 mm.
TV weight: 5.3 kg.
Attention! The V236H1-P01 panel of the RUBIN RB-24S2UFD LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-24SE5F

 Technical description and composition of the RUBIN RB-24SE5F TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-24SE5F
Chassis / Version: TP.VST59.P63
Panel: M240HTN01.2
Power Supply (PSU): integrated into MainBoard
PWM Power: LD7536R
MainBoard: TP.VST59.P63
IC MainBoard: CPU: TSUMV59XE-Z1, SPI FLASH: GD25Q32, SOUND: YD1517P
Specifications RB-24SE5F
RUBIN RB-24SE5F
General recommendations for TV LCD LED repair
Repair of the RUBIN RB-24SE5F TV should begin with a careful external examination of all its constituent elements and modules. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
In cases where the RUBIN RB-24SE5F TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light up or blink, and there are no sounds and no signs of operation when turned on, the power module is most likely faulty or there is no power processor on the motherboard (a typical defect of some RUBIN TV models). In general, first of all, it is necessary to check the electrolytic capacitors of the filters of the secondary rectifiers and the fuse at the mains input. If it is cut off, then the diodes of the rectifier bridge and the key transistor of the converter, which can be located either on a separate heatsink or integrated with a PWM controller into a common microcircuit, should be checked for a breakdown of PN junctions. Options are possible.
If a breakdown of the power switch is detected, it should be remembered that in a switching power supply (SMPS) it does not fail by itself without reasons that should be looked for by checking other elements of the primary circuit - electrolytic capacitors, a PWM controller, which can only be checked replacement, as well as other semiconductor elements (diodes, transistors, zener diodes).
If the RUBIN RB-24SE5F has no picture, but there is sound and the TV is controlled from the remote control, there is likely a malfunction in the M240HTN01 panel backlight circuits. 2. The LEDs or the power converter - LED driver may be faulty. Often in such cases, when you turn on the TV, an image appears and immediately disappears. First of all, it is necessary to make sure that the electrolytic capacitors of the rectifier filter supplying the LED driver are in good working order, and check the LEDs by connecting those that are known to be working for diagnostics.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source.
Diagnostics and repair of the TP.VST59.P63 motherboard is carried out by checking the functionality of the stabilizers or power converters of the module chips. In some cases, a software update is required.

Repair of the board and replacement of CPU: TSUMV59XE-Z1, SPI FLASH: GD25Q32 microcircuits are made with the necessary equipment and the corresponding element base. Malfunctions associated with the use of BGA soldering technologies can be localized by the warm-up method.

Attention to users! Independent repair of the RUBIN RB-24SE5F TV without proper qualifications and experience can lead to its complete non-repairability!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-24SE5F, Main: TP.VST59.P63 , Panel: M240HTN01.2

 The appearance of MainBoard TP.VST59.P63 is shown in the figure below:
TP.VST59.P63
The TP.VST59.P63 motherboard is combined with a power supply module and is an independent device based on the TSUMV59Xxx multifunctional processor. Repair of such a board must begin with checking the power supply elements, as well as the operability of voltage converters and linear stabilizers required to provide power to certain processor nodes, in particular: core power supply + 1.2V, built-in DDR + 1.8V memory and stand-by mode node by 3.3V. The supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.
TP.VST59.P63 can be used in TVs:
RUBIN RL-22SE5F (Panel M215HGE-L2-M), RUBIN RB-24SE5F (Panel M240HTN01.2).
The main features of the RUBIN RB-24SE5F device:
Installed matrix (LED-panel) M240HTN01. 2.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using LD7536R microcircuits.
MainBoard - the main board (motherboard) is a TP.VST59.P63 module, using CPU chips: TSUMV59XE-Z1, SPI FLASH: GD25Q32, SOUND: YD1517P and others.
Additional technical information about the panel:
Brand: AUO
Model: M240HTN01.2
Type: a-Si TFT-LCD, Panel
Diagonal size: 24.0 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 531.36x298.89 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 3.5 / 1.5 (Tr / Td)
Frequency: 60Hz
Lamp Type: 9S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-24SE5F TV with LCD M240HTN01.2, 24 "(61 cm) diagonal in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 160,000: 1 is achieved by special LED control .The technology of manufacturing the screen of this TV model is realized with LED backlight. The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
The power of the sound system is 6 W (2x3 W), provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768, 1920x1080.
Dimensions: with stand 557x388x170 mm, without stand 557x343x50 mm.
TV weight: 4.2 kg.
Attention! The M240HTN01.2 panel of the RUBIN RB-24SE5F LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!

It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-24SE9T2S

Technical description and composition of the RUBIN RB-24SE9T2S TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-24SE9T2S
Chassis / Version: CV512L-B
Panel: CX236LEDM
LED backlight: RF-AD236C14-1007S-01 A2
LED driver (backlight): integrated into PSU
Power Supply (PSU): SHG2401A-207S DLBB393
PWM Power: SOT-23-6 (OB2273)
MainBoard: CV512L-B JRA-512LB-15H
IC MainBoard: CPU: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P
Tuner: DMI21-C5I2RH, CDT-9NS161-RD41
Control: IR: 200-GJR-LE32190-0H
Specifications RB-24SE9T2S
RUBIN RB-24SE9T2S
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- RUBIN RB-24SE9T2S TV does not turn on and does not show any signs of turning on, does not respond to control buttons and to the remote control.
Often in such cases, the SHG2401A-207S power supply module is faulty. In the absence of the necessary supply voltages in the secondary circuits of the converters, it is necessary to check the power switches and rectifier diodes for possible partial or complete breakdown.
In case of diode breakdowns in the secondary circuits, the converter can operate in an emergency mode of short circuit without output voltages, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse and / or the current sensor in the source of the key usually breaks off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and immediately disappears
As a rule, in such cases there is no display backlight. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
When trying to detect a break in the LED lines, it should be borne in mind that it is difficult to do this without disassembling the panel. For example, a current source is required to open PN junctions connected in series.
- The indicator on the front panel blinks, the TV does not turn on in operating mode, does not respond to the remote control.
Repair or diagnostics of the CV512L-B motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and matrix. If necessary, you should update or replace the software (software). If it is not possible to replace the MB (SSB) board, it is necessary to check the health of its elements - CPU: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P. Defective components must be replaced.
If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as that the supply voltages on the DMI21-C5I2RH, CDT-9NS161-RD41 tuner terminals are in accordance. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Attention to TV owners! Attempts to repair RUBIN RB-24SE9T2S yourself are not recommended by the manufacturer and can lead to serious negative consequences!

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Main CV512L-B

 The appearance of the MainBoard CV512L-B is shown in the figure below:
CV512L-B
CV512L-B can be used in TVs:
BBK 28LEM-1021/T2C (Panel SV275SHD HX010403 X41), BBK 22LEM-1026/FT2C (Panel M215HGE-P02), DEXP H24B7100E (Panel CX236LEDM (V236BJ1-P01)), DEXP F22B7000E/B (Panel CX215LEDM), ERISSON 22LEE31T2 (Panel CX215LEDM), RUBIN RB-22SE2FT2S (Panel 1080p Full HD 1920x1080), SUPRA STV-LC24T880WL (Panel HV236WHB-N00), SUPRA STV-LC22T880FL (Panel LC215DTBA).
External view of the power supply
Key features of the RUBIN RB-24SE9T2S device:
Installed matrix (LED-panel) CX236LEDM.
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-24SE9T2S TV is carried out by the SHG2401A-207S power module, or its analogs using SOT-23-6 (OB2273) microcircuits.
MainBoard - the main board (motherboard) is a CV512L-B module, using CPU chips: S2T512, Spi Flash: 25Q64FVSIG, Audio: YD1517P and others.
Tuner DMI21-C5I2RH, CDT-9NS161-RD41 provides reception of television programs and tuning to channels.
RUBIN RB-24SE9T2S TV with LCD CX236LEDM, diagonal 24 "(61 cm), 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 200,000: 1 is achieved by special control of the LEDs. technology of production of the screen of this TV model is realized LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic resolution 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. and the digital signal is generated in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power of 10 W (2x5 W) is provided by two speakers. Uses NICAM stereo processing system and Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2, DVB-S2 standards.
Dimensions: with stand 551x356x175 mm, without stand 551x333x54 mm.
TV weight: with stand: 4.3 kg, without stand: 3.7 kg.
Attention! The CX236LEDM panel of the RUBIN RB-24SE9T2S LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable ................................ .....................

REPAIRING / SERVICING TV RUBIN RB-26SL1U

Technical description and composition of the RUBIN RB-26SL1U TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-26SL1U
Panel: LC260EXN (SD) (A3) LED
Power Supply (PSU): 465-01A2-L6501G K-150S1
MainBoard: 471-01A3-64701G MST6M48 / 6M182 T7
IC MainBoard: PAM8610
Tuner: CDT-3FP2I2-31
Specifications RB-26SL1U
RUBIN RB-26SL1U
General recommendations for TV LCD LED repair
Repair and diagnostics of any electronic device, in particular RUBIN RB-26SL1U, should be started with a careful external examination of the internal and external elements. Based on visible external changes in the state of components, it is usually possible to determine the further direction of troubleshooting and localization of a defect before taking the necessary measurements. In some cases, defective elements can be seen with the naked eye, for example, charred resistors or swollen sintered capacitors, or electrolytic ones in rectifier filters. The formed ring cracks in the soldering of the terminals of transformers or heating circuit elements are also frequent sources of many malfunctions with a variety of external manifestations.
In the absence of any signs of operability, when the RUBIN RB-26SL1U does not turn on and does not signal anything with the control lamps on the panel, there is a possibility that the power supply module K-150S1 465-01A2-L6501G of the TV may malfunction. With the same manifestations, the power regulator of the control processor on the motherboard may be faulty. When repairing a power supply, it is advisable to start diagnostics with checking the mains fuse and electrolytic capacitors of the filters of the secondary rectifiers of the converter. In the event of a break in the fuse, the cause should be sought in the power semiconductor elements of the pulse converter of the main power supply unit. First of all, it is necessary to check the diodes of the rectifier bridge of the mains voltage and the power switch (s) of the converter.
It should be remembered that in the practice of repair, usually power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the reason that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dry electrolytic capacitors or broken resistors in the primary circuit, or the PWM controller microcircuit itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If, when you turn on RUBIN RB-26SL1U, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the LED circuit of the LC260EXN (SD) (A3) LED panel backlight, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
Repair of the MST6M48 / 6M182 T7 471-01A3-64701G motherboard must begin with diagnosing and checking all linear stabilizers or power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM.
When repairing an MB board, it is necessary to check its PAM8610 components. Defective elements should be replaced. If BGA chips are installed, their failure is usually localized by warming up.
Before changing the CDT-3FP2I2-31 tuner, if it is not possible to tune to TV channels, you should make sure that there are supply voltages, including the power supply for varicaps (30-33V), which must be measured at the corresponding terminals of the tuner.

Attention to users! Independent repair of the RUBIN RB-26SL1U TV without proper qualifications and experience can lead to its complete non-repairability!

 DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-26SL1U , Main: MST6M48/6M182 T7 471-01A3-64701G, Panel: LC260EXN (SD)(A3) LED

 The appearance of the MainBoard 471-01A3-64701G is shown in the figure below:
471-01A3-64701G
471-01A3-64701G can be used in TVs:
ROLSEN RL-42L12002F (Panel LC420EUD (SD)(A1)), RUBIN RB-26SL1U (Panel LC260EXN (SD)(A3) LED).
External view of the power supply
Key features of the RUBIN RB-26SL1U device:
Installed matrix (LED panel) LC260EXN (SD) (A3) LED.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-26SL1U TV is carried out by the 465-01A2-L6501G power module, or its analogs.
MainBoard - the main board (motherboard) is a 471-01A3-64701G module, using PAM8610 microcircuits and others.
The CDT-3FP2I2-31 tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: LG Display
Model: LC260EXN-SDA3
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 10%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 68%
Response Time: 6 (G to G)
Frequency: 60Hz
Lamp Type: WLED Embedded (LED Driver)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
RUBIN RB-26SL1U TV with LCD LC260EXN, diagonal size 26 "(66 cm) 16: 9 format. The required brightness of the screen of 400 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 150,000: 1 is achieved by a special control of the LEDs. The LED panels of this TV are equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping is carried out in the standards 480i, 480p, 576i, 576p, 720p Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker sound system power 20 W (2x10 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV x2, S-Video x2, component, VGA, HDMI x2, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768.
The power consumed by the TV in operating mode from the network is 85 watts.
Dimensions: without stand 654x422x42 mm.
TV weight: 6.8 kg.
Attention! The LC260EXN (SD) (A3) LED panel of the RUBIN RB-26SL1U LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-22SE9FT2C

Technical description and composition of the RUBIN RB-22SE9FT2C TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-22SE9FT2C
Chassis / Version: T.SIS231.T65
Panel: M215HTN01.1 // CX215LEDM HD
MainBoard: T.SIS231.T65
IC MainBoard: Spi Flash: 25Q64
Tuner: No marking
Specifications RB-22SE9FT2C
RUBIN RB-22SE9FT2C
General recommendations for TV LCD LED repair
RUBIN RB-22SE9FT2C TV, like many other electronic devices, it is advisable to start repairing by inspecting all external and internal elements. It often happens that visible damage to elements or connections helps determine the direction of troubleshooting. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
If RUBIN RB-22SE9FT2C does not turn on, no indicator lights on the front panel will light up or blink, therefore, there is a very high probability of a power module malfunction. In some cases, only the processor power regulator may be faulty. It is advisable to start diagnostics of the power supply module by checking the condition of the electrolytic capacitors of the rectifier filters and the mains fuse. Defective capacitors should be replaced. In the event that the mains fuse is broken, it is necessary to check first of all the power semiconductor elements - rectifier diodes and transistors, which are often found in a breakdown state in such situations.
In most cases, key breakdowns in switching power supplies (SMPS) do not occur without reason and you should look for other faulty circuit elements that could provoke a defect. This can be dry electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defect of the PWM chip from the manufacturer.
If, when you turn on RUBIN RB-22SE9FT2C, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the LED circuit of the backlight of the M215HTN01.1 CX215LEDM HD panel, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their conclusions, as well as the reliability of the connections in the connectors and the ration of the connector pins.
It is impossible to identify an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes.
Diagnostics and repair of the T.SIS231.T65 motherboard is carried out by checking the functionality of the stabilizers or power converters of the module chips. In some cases, a software update is required.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - Spi Flash: 25Q64 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (detected by warming up).

Attention! Users and owners of RB-22SE9FT2C TVs who do not have the appropriate qualifications, knowledge and experience are strongly discouraged from trying to repair themselves in order to avoid negative consequences that can lead to the complete non-repairability of the device.

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-22SE9FT2C, Main: T.SIS231.T65, Panel: M215HTN01.1

 The appearance of the MainBoard T.SIS231.T65 is shown in the figure below:
T.SIS231.T65
T.SIS231.T65 can be used in TVs:
DNS M24DM8 (Panel M236HGE-L20 ReV.C1), DNS 22AE7000 (Panel CX215LEDM), ERISSON 28LEP91 (Panel st2751a01-1), ROLSEN RL-19E1501T2C (Panel V185BJ1-PE1), RUBIN RB-22SE5FT2C (Panel LM215DA-T01), RUBIN RB-22SE9FT2C (Panel M215HTN01.1), SHIVAKI STV-24LEDGR9 (Panel M236HGE-L20 Rev.C1), SHIVAKI STV-24LEDGW9 (Panel M236H3-LA3), SHIVAKI STV-24LED12 (Panel M236HGE-P01), THOMSON T24E09DU-01B (Panel V236BJ1-P03 (C1)).
Key features of the RUBIN RB-22SE9FT2C device:
Installed matrix (LED-panel) M215HTN01.1 or CX215LEDM HD.
The necessary supply voltages for all nodes of the RUBIN RB-22SE9FT2C TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a T.SIS231.T65 module, using Spi Flash chips: 25Q64 and others.
Tuner Unmarked provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: AUO
Model: M215HTN01.1
Type: a-Si TFT-LCD, Panel
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Brightness: 250 cd / m²
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 3.8 / 1.2 (Tr / Td)
Frequency: 60Hz
Lamp Type: 12S4P WLED Without Driver
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-22SE9FT2C TV with LCD M215HTN01.1, 22 "(56 cm) 16: 9. The LED panel of this TV is equipped with Edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and movies in high quality HD at a resolution of 1920x1080 pixels in graphic resolution according to the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i, 1080p. Supported multimedia file formats: MP3, WMA, MPEG4, Xvid, MKV, JPEG ...
Speaker power of 10 W (2x5 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, SCART, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 503x327x175 mm, without stand 503x305x51 mm.
TV weight: 3.3 kg.
Attention! The M215HTN01.1 panel of the RUBIN RB-22SE9FT2C LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!

It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-28D7

Technical description and composition of the RUBIN RB-28D7 TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-28D7
Chassis / Version: CV59SH-A32
Panel: CX275DLEDM
MainBoard: CV59SH-A32
IC MainBoard: CPU: TSUMV59XUS-Z1, SPI FLASH: GD25Q32
Specifications RB-28D7
RUBIN RB-28D7
General recommendations for TV LCD LED repair
RUBIN RB-28D7 TV, like many other electronic devices, it is advisable to start repairing with an inspection of all external and internal elements. Visible damage to elements can sometimes indicate the direction of searching for a defect even before the necessary measurements are taken. Elements with visible damage, for example, capacitors swollen after electrolyte boiling, charred resistors in certain nodes of the circuit, as well as ring cracks in the solders, will help the master guess about the causes and possible consequences of the malfunction.
Power supply module malfunctions can be expressed in different ways, for example, RUBIN RB-28D7 does not turn on at all and the control lamps on its front panel do not light up or blink, all signs of operability are absent. It should be noted that the processor power regulator (converter) may be faulty with the same external manifestations. The first step is to replace the swollen capacitors of the rectifier filters, if any. If the mains fuse in the power supply is broken, in most cases a breakdown of the power switch (s) is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. You should also check the diodes of the rectifier bridge and the electrolytic capacitor of the mains rectifier filter.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits, checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If RUBIN RB-28D7 does not have an image, there is sound and the channels are switched, there is a possibility of a malfunction in the LED circuit of the CX275DLEDM panel backlight or their power converter - LED driver. Sometimes, when turned on, the image appears and disappears immediately. In such cases, it is necessary to check the electrolytic capacitors of the power filter of the LED driver itself, including in the secondary rectifier of the main power supply unit.
In most cases of lack of backlighting, it becomes necessary to disassemble the panel in order to check the LEDs, connectors, loops and all contact connections. If one or more LEDs do not work in one line, then they are broken and should be replaced.
It is impossible to identify an open circuit in the LED line without disassembling the panel with a simple multimeter. The LEDs are connected in series and a voltage of several tens of volts is required to open their junctions. Ideally, a current source is suitable for such purposes.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or microcircuit power converters and, if necessary, update the software (software).
Complicated repair of MB (SSB) board is in some cases possible and practiced by repairmen. To do this, check and, if necessary, replace the elements of the CPU: TSUMV59XUS-Z1, SPI FLASH: GD25Q32. Malfunctions in BGA chips are usually easy to detect by warm-up.

Attention to users! Independent repair of the RUBIN RB-28D7 TV without proper qualifications and experience can lead to its complete non-repairability!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-28D7, Main: CV59SH-A32, Panel: CX275DLEDM

 The appearance of the MainBoard CV59SH-A32 is shown in the figure below:
CV59SH-A32
Key features of the RUBIN RB-28D7 device:
Installed matrix (LED panel) CX275DLEDM.
The necessary supply voltages for all nodes of the RUBIN RB-28D7 TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a CV59SH-A32 module using CPU chips: TSUMV59XUS-Z1, SPI FLASH: GD25Q32 and others.
RUBIN RB-28D7 TV with LCD CX275DLEDM, diagonal 28 "(71 cm) in 16: 9 format. The required screen brightness of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 200,000: 1 is achieved by special control of the LEDs. The LCD-panel of the TV is equipped with direct backlighting with rear-mounted LEDs - Direct LED.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported media file formats: MP3, WMA, MPEG4, Xvid, DivX, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Dimensions: with stand 645x444x190 mm, without stand 645x403x73 mm.
Attention! The CX275DLEDM panel of the RUBIN RB-28D7 LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-32D3U

Technical description and composition of the RUBIN RB-32D3U TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-32D3U
Chassis / Version: CV59SH-A39
Panel: T320XVN02.9
LED driver (backlight): integrated into MainBoard
Power Supply (PSU): integrated into MainBoard
MainBoard: CV59SH-A39
IC MainBoard: CPU: TSUMV59XUS-Z1, SPI FLASH: 25Q32
RUBIN LED
Model: RB-32D3U
Chassis / Version: TP.VST59
Panel: T320XVN01.0
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: LD7536 (6pin)
MOSFET Power: N-FET 600V 7A
MainBoard: TP.VST59.P83
IC MainBoard: 25Q32BVSIG (8), AIC2857F (8), A13B (5), OB3350CP (8), WP9P, H1A, W41P
Tuner: CDT-3NP5I1-10
Specifications RB-32D3U
RUBIN RB-32D3U
General recommendations for TV LCD LED repair
Repair of the RUBIN RB-32D3U TV should begin with a careful external examination of all its components and modules. Often, according to certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are taken, which will determine a further algorithm for troubleshooting and localizing a defect. If charred resistors, swollen electrolytic or sintered capacitors, ring cracks in the soldering of the terminals of transformers or heating elements are found, it is advisable to establish the causes and consequences of the malfunction, as well as to check the connected elements and assemblies.
If the RB-32D3U TV does not turn on, does not emit any sounds when turned on, as well as no indicators on the front panel light or blink, there is a high probability of a malfunction in the power module. In some cases, only the regulator or power converter of the control processor may be faulty, which is typical for some RUBIN models. When diagnosing and repairing the power supply, after replacing the swollen capacitors of the secondary rectifier filters (if any), you must first check the mains fuse. If it breaks, you should check the power elements of the transistors and diodes of the rectifier bridge for avalanche (thermal) breakdown.
It should be remembered that in the practice of repair, usually power switches in switching power supplies (SMPS) do not fail due to their poor quality and, in such cases, it is necessary to look for the reason that led to a malfunction and provoked a breakdown of the key. Most often, the culprits of the accident are dry electrolytic capacitors or broken resistors in the primary circuit, or the MPF 36R 74 (6pin) PWM controller chip itself may be faulty. It is also necessary to check all the semiconductor elements of the stabilization circuit in the primary and secondary circuits.
If, when you turn on RUBIN RB-32D3U, there is no image, or it appears for a second and disappears, but there is sound, most likely there is a malfunction in the LED circuit of the T320XVN01.0 panel backlight, or in their power converter. It is necessary to check the electrolytic capacitors of the filter of the secondary rectifiers in the common power supply.
It is often necessary to disassemble the panel to check the health of the LEDs, as well as the contact connections in the connectors and solders.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
When trying to repair the motherboard, you should first check the serviceability of linear stabilizers or microcircuit power converters and, if necessary, update the software (software).
When repairing an MB board, you need to check its components 25Q32BVSIG (8), AIC2857F (8), A13B (5), OB3350CP (8), WP9P, H1A, W41P. Defective elements should be replaced. If BGA chips are installed, their failure is usually localized by warming up.
If there is no reception of television channels, but the TV is working properly from external devices, first of all, you need to check the supply voltage of the varicaps of the CDT-3NP5I1-10 tuner, which is usually in the range of 30-33V, as well as other supply voltages at the tuner outputs.

Once again, we remind TV users: you should not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust repairs only to professionals with sufficient experience in the field of electronic repair.

DOWNLOAD SCHEMATIC DIAGRAM  / SERVICE MANUAL   ------------------>    Service manual and sсhematic diagram TP.VST59.P83-65W18


DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-32D3U, Main Board: TP.VST59S.P89, Cpu: TSUMV59XUS-Z1, Spi Flash: Winb 25Q32, Panel: CX315DLEDM

 If the SPI FLASH Winbond software fails, we recommend replacing the microcircuit with a new one. In addition, faulty Winbond microcircuits can sometimes recover for a while after warming up with a soldering station or even a lighter, which is enough to read its standard contents.

Additional MainBoard Repair
External view of MainBoard TP.VST59.P83 and voltage measurements at test points are shown in the figure below:
TP.VST59.P83

The TP.VST59.P83 motherboard is combined with a power supply module and is an independent device based on the TSUMV59Xxx multifunctional processor. Repair of such a board must begin with checking the power supply elements, as well as the operability of voltage converters and linear stabilizers required to provide power to certain processor nodes, in particular: core power supply + 1.2V, built-in DDR + 1.8V memory and stand-by mode node by 3.3V. The supply voltage of the LCD panel is 5V or 12V, depending on the type of panel used, it is necessary to check directly on the LVDS connector.

TP.VST59.P83 can be used in TVs:
AKAI LEA-28A08W (Panel ST2751A01-1), ERISSON 39LEN52 (Panel TLV3931-02), ERISSON 32LEN52 (Panel TLV3231-01), FUSION FLTV-32L28B (Panel TH315B051-MD1), FUSION FLTV-39LF28B (Panel V390HJ1-P02), FUSION FLTV-32L41B (Panel DBMS315LK09-C), FUSION FLTV-40LF28B (Panel DBMS400LK01-A), HYUNDAI H-LED32V18 (Panel CX315DLEDM T320XVN02.A ), MYSTERY MTV-4023LW (Panel CX390DLEDM / T390HVN04.0), ROLSEN RL-39D1305F (Panel V390HJ1-P02 Rev. C1), RUBIN RB-32D3U (Panel T320XVN01.0), RUBIN RB-39D3F (Panel CX390DLEDM), SHIVAKI STV-40LED5 (Panel V390HJ1-P01 Rev C1), SUPRA STV-LC3225AWL (Panel TH315B051-MD2), SUPRA STV-LC32T810WL (Panel TC315F3E5-A), SUPRA STV-LC32880WL (Panel HE315GH-E77GM\PW1 ), SUPRA STV-LC2825WL (Panel SM275TC30), SUPRA STV-LC32820WL (Panel TC315FJE1-MD4), SUPRA STV-LC32810WL (Panel TC315F3E5-A), TELEFUNKEN TF-LED32S7 (Panel ST3151A05-5 CX315DLEDM).
Key features of the RUBIN RB-32D3U device:
Installed matrix (LED-panel) T320XVN01.0.
The backlight LEDs are powered by a converter combined with the TP.VST59.P83 main board, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using LD7536 (6pin) microcircuits and N-FET 600V 7A power switches.
MainBoard - the main board (motherboard) is a TP.VST59.P83 module, using chips 25Q32BVSIG (8), AIC2857F (8), A13B (5), OB3350CP (8), WP9P, H1A, W41P and others.
The CDT-3NP5I1-10 tuner provides reception of television programs and tuning to channels.
Information from an alternative source:
RUBIN RB-32D3U The same chassis for BRAVIS LED-DH3230BH
Panel type (matrix): CX315DLEDM
Motherboard: TP.VST59.P83, Tuner: CDT-3NP5I1-10
T-con: T320XVN01.0 CTRL BD / 32T21-C06
Additional technical information about the panel:
Brand: AUO
Model: T320XVN01.0 CELL
Type: a-Si TFT-LCD, CELL
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: AMVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 2%), Hard coating (3H)
Glass Depth: 0.50 + 0.50 mm
Transmissivity: 6.1% (with Polarizer)
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 78%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V

RUBIN RB-32D3U TV with LCD T320XVN01.0, 32 "(81 cm) diagonal, 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 400,000: 1 is achieved by special LED control The LED panel of this TV is equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in a graphic resolution of 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM , NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 20 W (2x10 W) is provided by two speakers. The NICAM STEREO audio processing system is used.

The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, SCART, VGA, HDMI x3, USB. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The power consumed by the TV in operating mode from the network is 56 W.
Dimensions: with stand 750x530x200 mm, without stand 750x504x75 mm.

REPAIRING / SERVICING TV RUBIN RB-32SD8T2C

Technical description and composition of the RUBIN RB-32SD8T2C TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-32SD8T2C
Chassis / Version: JUC7.820.00081373
Panel: M320X13-E1-L (G1)
T-CON: 6870C-0414A LC320EXN-SEA1-K31
LED driver (backlight): integrated into MainBoard
PWM LED driver: OB3350CP
Power Supply (PSU): integrated into MainBoard
PWM Power: NCP1251
MainBoard: JUC7.820.00081373
IC MainBoard: SPI FLASH: Q32B-14HIP
Tuner: R620D
Control: IR: JUC7.820.00081814
Specifications RB-32SD8T2C
RUBIN RB-32SD8T2C
General recommendations for TV LCD LED repair
Possible manifestations of defects
- RUBIN RB-32SD8T2C does not turn on and does not show any signs of operability at all. Does not blink indicators and does not respond to control buttons.
In this case, the main Switching Power Supply (AC / DC voltage converter), the elements of which are located on the MainBoard JUC7.820.00081373, may be faulty. Its output voltages should be measured, and if they are absent, check the serviceability of the power switches of the converters and rectifier diodes for the probability of a short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can operate in an emergency mode in the short-circuit mode, and in the event of a short circuit in the power elements of the primary circuit, the mains fuse is usually cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers NCP1251, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, but there is sound and reaction to the remote control. Or, for a second, the image may appear immediately after switching on.
Usually, in such cases, there is no backlight of the LED panel (matrix). Often the cause of a malfunction is the lack of current in the LED circuit, for example, their open or short circuit, or a violation of the contact connections of the connectors.
When diagnosing, it must be borne in mind that it is impossible to check for an open in the circuit of the LED lines without disassembling the panels using a tester or multimeter. To open all PN junctions connected in series, a voltage of the order of several tens of volts is required, and ideally a current source. By opening the panel, you can check each LED separately. Typically, Chinese multimeters will lightly light one 3-volt LED when the probes are connected to it in the forward direction. For dual 6-volt LEDs, the PN junction of its emergency zener diode can serve as an indicator of the LED health. In the event of a malfunction of the LED, its zener diode will either be cut off, or broken through in the K / Z.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals the standby mode.
Repair or diagnostics of the JUC7.820.00081373 motherboard should begin with checking the stabilizers and power converters necessary to power the microcircuits and the matrix. If necessary, you should update or replace the software (software). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - SPI FLASH: Q32B-14HIP. In cases where a BGA processor is used, its malfunction is usually detected by a local warm-up method.
Before replacing the R620D tuner, if there is no tuning to the channels, you must first check the software and the supply voltage at its outputs. You also need to make sure that the tuner and processor can exchange data via the I2C bus

Users and owners of TVs should remember that attempts to repair the RUBIN RB-32SD8T2C TV on their own without the appropriate qualifications and necessary experience can lead to serious negative consequences!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-32SD8T2C, Main: JUC7.820.00084054 HLS49J 32C2000, Panel: M320X13-E3-H 


 DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-32SD8T2C, Main: JUC7.820.00084054 LS1B 32C2000, Panel: C320X13-E3-L, FLASH: GD25Q32B

 Another option for assembling RUBIN RB-32SD8:
MAIN: JUS7.820.00081373, T-con: LC320EXN-SEA1-k31, Panel: C320X13-E3-L (G1).

Additional MainBoard Repair
The appearance of the MainBoard JUC7.820.00081373 is shown in the figure below:
JUC7.820.00081373
JUC7.820.00081373 can be used in TVs:
AKAI LEA-32C25M (Panel M320X13-E1-H), ERISSON 32LEC2300 (Panel M320X13-E1-L), FUSION FLTV-28L32B (Panel M280X13-E1-H).
Key features of the RUBIN RB-32SD8T2C device:
Installed matrix (LED-panel) M320X13-E1-L (G1).
Matrix control uses a Timing Controller (T-CON) 6870C-0414A.
To power the backlight LEDs, a converter combined with the JUC7.820.00081373 main board is used, controlled by the OB3350CP PWM controller.
The power module is combined with the MainBoard and is made according to the AC / DC flyback voltage converter using NCP1251 microcircuits.
MainBoard - the main board (motherboard) is a JUC7.820.00081373 module, using SPI FLASH chips: Q32B-14HIP and others.
The R620D tuner provides reception of television programs and tuning to channels.
RUBIN RB-32SD8T2C TV with LCD M320X13-E3-H, 32 "(81 cm) 16: 9 format diagonal. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 150,000: 1 is achieved by special control The LCD panel of the TV is equipped with direct backlighting with rear-mounted LEDs - Direct LED.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the 720p (HD Ready) graphics standard.Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal shaping is performed in 480i, 480p, 576i, 576p, 720p, 1080i, 1080p standards Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, audio x2, component, VGA, HDMI x2, USB x2. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
The digital tuner is capable of receiving television channels in the DVB-T MPEG4, DVB-C, DVB-T2 standards.
Dimensions: with stand 735x484x170 mm, without stand 735x441x81 mm.
TV weight: with stand: 7.4 kg, without stand: 5.9 kg.
Attention! The M320X13-E3-H panel of the RUBIN RB-32SD8T2C LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-32SE8

Technical description and composition of the RUBIN RB-32SE8 TV, panel type and modules used. The composition of the modules.
RUBIN LED
Model: RB-32SE8
Chassis / Version: JUG7.820.1376 LS0D
Panel: M320X12-E1-A T320XVN02.A
LED backlight: MPEG CHGD32LB01_LED7020_V0.4_20120719 2pcs
T-CON: T320XVN02.0 CTRL BD 32T24-C05
LED driver (backlight): integrated into PSU LED output 190mA, 120V
Power Supply (PSU): MPS35D-1MF-190
MainBoard: JUG7.820.1376 LS0D 2500M
IC MainBoard: CPU: TSUM59XES-XG, SPI Flash: EN25P32
Tuner: NoName
Specifications RB-32SE8
RUBIN RB-32SE8
General recommendations for TV LCD LED repair
Possible manifestations of malfunctions
- RUBIN RB-32SE8 TV does not turn on at all. No response to the remote control and front panel control buttons. Indicator lamps do not light up or flash.
Often in such cases, the MPS35D-1MF-190 power supply module is faulty. Then you should measure its output voltages and, in case of their complete or partial absence, it is necessary to check the serviceability of the power switches and rectifier diodes of the converters for the presence of a possible short circuit.
In case of any breakdown of semiconductors in the secondary circuits, the converter can usually operate normally in an emergency short-circuit mode. There are no output voltages. And with a short circuit in the power elements of the primary circuit, as a rule, the mains fuse breaks and, less often, the current sensor in the source of the key.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or knowingly working properly.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
In such cases, the most likely malfunction of the LED panel backlighting elements. The reason for this may be an open circuit in the LED circuit, or a problem in stabilizing their power supply.
To identify an open circuit in the LED lines without disassembling the panel, a current source is required. It is impossible to open the junctions connected in series with a simple multimeter; a voltage of several tens of volts is required.
- The TV does not go into operation, does not respond to the remote control. The indicator on the front panel is on or blinking.
Repair or diagnostics of the JUG7.820.1376 motherboard should begin with checking the stabilizers and power converters required to power the microcircuits and matrix. If necessary, you should update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - CPU: TSUM59XES-XG, SPI Flash: EN25P32 which may require replacement with new ones. If a BGA processor is installed, there is a possibility of a violation of the soldering of the contacts of its pins with the board (detected by warming up).
If there is no tuning for terrestrial or cable TV channels, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltages at the NoName tuner outputs. It is also necessary to check with an oscilloscope the presence of pulses of data exchange between the tuner and the processor via the I2C bus.

Remember! Attempts to self-repair the RUBIN RB-32SE8 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device!

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-32SE8, Main: JUG7.820.1376 LS0D, Panel: M320X12-E1-A

 Key features of the RUBIN RB-32SE8 device:
Installed matrix (LED panel) M320X12-E1-A T320XVN02.A.
The matrix control uses the T320XVN02.0 Timing Controller (T-CON).
A converter combined with a power supply is used to power the backlight LEDs.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-32SE8 TV is carried out by the MPS35D-1MF-190 power module, or its analogs.
MainBoard - the main board (motherboard) is a JUG7.820.1376 module, using CPU chips: TSUM59XES-XG, SPI Flash: EN25P32 and others.
Tuner NoName provides reception of television programs and tuning to channels.
RUBIN RB-32SE8 TV with LCD M320X12-E1-A, 32 "(81 cm) diagonal, 16: 9 format. The required screen brightness of 350 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 200,000: 1 is achieved by special control The LED panel of this TV is equipped with edge LED backlighting.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in 720p (HD Ready). The input high-frequency or video signal can be processed in analog PAL systems , SECAM, NTSC Graphic processing and digital signal shaping takes place in 480i, 480p, 576i, 576p, 720p, 1080i standards Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 16 W (2x8 W) is provided by two speakers. Uses the NICAM stereo signal processing system and the Sound Surround function.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI x2, USB x2. A headphone output is provided. To connect a computer or laptop to this TV model, a VGA (D-Sub 15) connector on the TV case is used, this interface supports resolutions: 640x480, 800x600, 1024x768, 1360x768.
Dimensions: with stand 731x500x166 mm, without stand 731x495x50 mm.
TV weight: 6 kg.
Attention! The panel M320X12-E1-A T320XVN02.A of the RUBIN RB-32SE8 LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.

REPAIRING / SERVICING TV RUBIN RB-22SE5FT2C

Technical description and composition of the RUBIN RB-22SE5FT2C TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-22SE5FT2C
Chassis / Version: T.SIS231.T65
Panel: LM215DA-T01
MainBoard: T.SIS231.T65
IC MainBoard: 25Q64
Specifications RB-22SE5F
RUBIN RB-22SE5FT2C
General recommendations for TV LCD LED repair
It is advisable to start repairing electronic devices, including the RUBIN RB-22SE5FT2C TV, with an external examination of its external and internal elements. Often, according to certain external signs, it may be possible to draw certain conclusions about the reasons for the failure of certain elements of the circuit even before the necessary measurements are taken, which will determine a further algorithm for troubleshooting and localizing a defect. Ring cracks in the soldering of the leads of the heating elements, swollen electrolytic capacitors, a charred layer of paint on the resistors - all this for the repairman can be a significant clue in assumptions about the causes and consequences of a malfunction.
Sometimes the RUBIN RB-22SE5FT2C TV just won't turn on. No control lamps on the front panel are on or blinking, the TV does not respond to the remote control and does not emit any sounds or any signs of life when turned on. The most likely cause of a malfunction is the failure of the common power module. If it works, check the processor batteries on the SSB (Main Board). In the absence of swollen capacitors of the secondary rectifier filter, diagnostics of the power supply should begin with checking the fuse and, if it is broken, it is necessary first of all to check all power semiconductor elements of the primary circuit - diodes and transistors for the likelihood of an avalanche or thermal breakdown.
Power switches in switching power supplies (SMPS) fail for no reason very rarely and, in case of their breakdown, it is necessary to look for a malfunction in the stabilization circuits, checking electrolytic capacitors, semiconductor devices and resistors in the primary circuit. The reason may be a malfunction of the PWM regulator microcircuit, which can only be checked by replacing it with a new or known good one.
If RUBIN RB-22SE5FT2C has no image, but there is sound, the LM215DA-T01 M00 panel backlight LEDs or their power converter may be faulty. You should also make sure that the electrolytic capacitors of the secondary rectifiers of the common power supply are in good working order.
A malfunction in the backlight circuits often occurs due to an open circuit in the power supply circuit of the LED lines. It is required to disassemble the panel and check the LEDs themselves, the ration of their conclusions, as well as the reliability of the connections in the connectors and the ration of the connector pins.
To check the LED strips for breakage without disassembling the panel, for example, a current source will help. It is impossible to open series-connected PN junctions with a simple multimeter; a voltage of the order of several tens of volts is required.
On the T.SIS231.T65 motherboard, in the event of a malfunction, you should first check the operability of all stabilizers or power converters of microcircuits and, if necessary, update the software (software).

When repairing an MB board, you need to check its components 25Q64. Defective elements should be replaced. If BGA chips are installed, their failure is usually localized by warming up.

Once again, we remind TV users: you should not try to repair yourself without the appropriate knowledge, experience and the necessary qualifications! Trust repairs only to professionals with sufficient experience in the field of electronic repair.

DOWNLOAD FIRMWARE FOR SPI FLASH  ----------->   RUBIN RB-22SE5FT2C, Main: T.SIS231.T65, Panel: LM215DA-T01 M00

 The appearance of the MainBoard T.SIS231.T65 is shown in the figure below:
T.SIS231.T65
T.SIS231.T65 can be used in TVs:
DNS M24DM8 (Panel M236HGE-L20 ReV.C1), DNS 22AE7000 (Panel CX215LEDM), ERISSON 28LEP91 (Panel st2751a01-1), ROLSEN RL-19E1501T2C (Panel V185BJ1-PE1), RUBIN RB-22SE5FT2C (Panel LM215DA-T01), RUBIN RB-22SE9FT2C (Panel M215HTN01.1), SHIVAKI STV-24LEDGR9 (Panel M236HGE-L20 Rev.C1), SHIVAKI STV-24LEDGW9 (Panel M236H3-LA3), SHIVAKI STV-24LED12 (Panel M236HGE-P01), THOMSON T24E09DU-01B (Panel V236BJ1-P03 (C1)).
Key features of the RUBIN RB-22SE5FT2C device:
Installed matrix (LED-panel) LM215DA-T01.
The necessary supply voltages for all nodes of the RUBIN RB-22SE5FT2C TV are provided by a switching power supply.
MainBoard - the main board (motherboard) is a T.SIS231.T65 module, using 25Q64 microcircuits and others.
Additional technical information about the panel:
Brand: PANDA
Model: LM215DA-T01
Type: a-Si TFT-LCD, CELL
Diagonal size: 21.5 inch
Resolution: 1920x1080, FHD
Display Mode: TN, Normally White, Transmissive
Active Area: 476.64x268.11 mm
Surface: Antiglare, Hard coating (3H)
Glass Depth: 0.70 + 0.70 mm
Contrast Ratio: 1000: 1
Display Colors: 16.7M (6-bit + Hi-FRC), CIE1931 72%
Response Time: 5 (Tr + Td)
Frequency: 60Hz
Signal Interface: LVDS (2 ch, 8-bit), 30 pins
Voltage: 5.0V
RUBIN RB-22SE5F TV with LCD LM215DA-T01, 22 "(56 cm) in 16: 9 format. The required screen brightness of 220 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 120,000: 1 is achieved by special LED control The LED panel of this TV is equipped with Edge LED backlighting.The design and technical capabilities of the TV provide viewing of broadcasts and films in high quality HD at a resolution of 1920x1080 pixels in graphic resolution in the standard 1080p (Full HD) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC Graphic processing and digital signal formation occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported multimedia file formats: MP3, WMA, MPEG4, MKV, JPEG.
Speaker power 6 W (2x3 W) is provided by two speakers. The NICAM STEREO audio processing system is used.
External interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, component, VGA, HDMI, USB. A headphone output is provided. To connect a computer or laptop to this TV model, use the VGA (D-Sub 15) connector on the TV case, this interface supports resolutions: 640x480, 800x600, 1024x768, 1280x1024, 1360x768, 1920x1080.
TV weight: 4 kg.
Attention! The panel LM215DA-T01 of the RUBIN RB-22SE5F LED TV is an expensive and unreliable element.
Do not allow any impact on the glass and pressure on the screen surface to avoid damage to the LED panel!
It is also unsafe for liquid to spill onto the screen. Sometimes one drop is enough if it drips down the glass onto the cables to make the TV unrepairable.