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.