Technical description and composition of the RUBIN RB-22S2UF TV, panel type and modules used. The composition of the modules.RUBIN LED
Model: RB-22S2UF
Chassis / Version: T.MS6M181.7A 11453
Panel: LE2360A-V02
LED driver (backlight): MKN_LE2360A-V02
PWM LED driver: EUP2589 (150B1)
MOSFET LED driver: STV6065
Power Supply (PSU): RS-400/120-S336 adapter 12v 4a
MainBoard: T.MS6M181.7A 11453
IC MainBoard: MST6M181VS-LF-Z1, YD1517, SGM330A-YS, AIC2565
Tuner: CDT-38P512-36
Specifications RB-22S2UFD
RUBIN RB-22S2UF
General recommendations for TV LCD LED repair
Repair of electronic equipment usually begins with its external examination and diagnostics of a malfunction. In this case, you should inspect all the internal components of the RUBIN RB-22S2UF TV, as well as the external elements of the case. Specific external damage to some elements can sometimes indicate further actions to determine the malfunction of the TV and localize the defect before starting the necessary measurements. 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 can be characteristic signs of the causes or consequences of an already known typical malfunction.
In cases where the RUBIN RB-22S2UF TV does not turn on, does not respond to the remote control and buttons, no indicators on the front panel light or blink, and there are no sounds and no signs of operability when turned on, the RS-400 power module is most likely faulty / 120-S336 adapter 12v 4a or there is no power to the processor on the motherboard (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.
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-22S2UF does not have an image, but there is sound and the TV is controlled from the remote control, there is likely a malfunction in the LE2360A-V02 panel backlight circuits. LEDs or 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.
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.
In cases of attempts to repair the motherboard T.MS6M181.7A 11453, it is necessary to check the performance of the stabilizers or power converters of its microcircuits and, if possible, update the software (software). BGA chips can in most cases be diagnosed by local heating.
In cases of attempts to repair the MB (SSB) board, it is necessary to check the serviceability of its elements - MST6M181VS-LF-Z1, YD1517, SGM330A-YS, AIC2565 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 the TV operates normally from external devices, but does not tune to TV channels, the CDT-38P512-36 tuner may be faulty. In such cases, first of all, you should make sure that there are supply voltages at its corresponding terminals, as well as the supply of varicaps (30-33V).
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 ------------------> RUBIN RB-22S2UF Chassis: T.MS6M181.7A
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-22S2UF, Main: T.MS6M181.7A 11453, Panel: LE2360A-V02
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 "), RUBIN RB-24S2UFD (Panel V236H1-P01).
Key features of the RUBIN RB-22S2UF device:
Installed matrix (LED panel) LE2360A-V02.
To power the backlight LEDs, the MKN_LE2360A-V02 LED driver is used, controlled by the EUP2589 (150B1) PWM controller. The keys of the STV6065 type are used as power elements of the LED driver.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-22S2UF TV is carried out by the RS-400 power module, or its analogues.
MainBoard - the main board (motherboard) is a T.MS6M181.7A module, using MST6M181VS-LF-Z1, YD1517, SGM330A-YS, AIC2565 and others.
The CDT-38P512-36 tuner provides reception of television programs and tuning to channels.
RUBIN RB-22S2UFD LCD TV 22 "(56 cm) in 16: 9 format. The required brightness of the screen of 300 cd / m² is provided by LED backlighting. Dynamic contrast ratio of 80000: 1 is achieved by special control of LED operation. -Panels of this TV are equipped with edge lighting from LEDs - Edge LED.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 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 is performed 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 of 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, 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: 579x423x126 mm.
TV weight: 3.9 kg.
Attention! The panel of the RUBIN RB-22S2UFD 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.