Technical description and composition of the RUBIN RB-32K101U TV, panel type and modules used. The composition of the modules.RUBIN
Model: RB-32K101U
Chassis / Version: MST6M182
Panel: LC320WXE (SB) (V2) // LTI320AP01 C01
Inverter (backlight): MP01009-LG32 // SSI320_4UA01
PWM Inverter: SG3525AN (16pin) // OZ9966SN (24)
MOSFET Inverter: KMB054N40DB, STU420S
Trans Inverter: // LT-U3208 T1117DY
Power Supply (PSU): MP01009 -LG32 // K190N1 Rev: A01
PWM Power: L6562D (PFC), LD7535
MOSFET Power: F13NK50Z, F3NK80Z
MainBoard: 471-01A2-58201G Rev0.4 CDT-3FP212-01 // T2 M6M8-C5P150-02400 941-11T2-64917G-S
IC MainBoard: TU301048 RAM8610 EN25B64 (16)
Specifications RB-32K101U
RUBIN RB-32K101U
General recommendations for TV LCD repair
Repair and diagnostics of any electronic device, in particular RUBIN RB-32K101U, it is advisable to start with a careful external examination of the internal and external elements. 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 may be characteristic signs of the causes or consequences of an already known typical malfunction.
If RUBIN RB-32K101U does not turn on, no control lamps on the front panel will light up or blink, therefore, there is a very high probability of a malfunction of the MP01009-LG32 // K190N1 Rev: A01 power module. In some cases, only the processor power regulator may be faulty. 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.
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 dried electrolytic capacitors in the primary circuit, and faulty damper elements, as well as broken resistors or punctured semiconductor elements in the stabilization circuits. Possible defects of the PWM microcircuit SG3525AN (16), T653A (8), AS358 (8), 62A50p (6) from the manufacturer.
In cases where the RUBIN RB-32K101U TV has lost the image, but there is sound and all other functions are operational, there is a possibility of a malfunction of the inverter (the converter for powering the backlight lamps). When you turn on the TV, the image may appear briefly and immediately disappear. It should be borne in mind that with such manifestations, the lamps themselves fail, the malfunction of which can be detected by replacing, connecting for diagnostics to the connectors that are known to be serviceable and suitable in power. When disabling the inverter protection (to enable diagnostics), special care must be taken due to the risk of failure of the power components. After the completion of all repair work, it is imperative to restore the protection circuits for the full and safe further operation of the TV by the user.
Repair of the motherboard 471-01A2-58201G Rev0.4 CDT-3FP212-01 // T2 M6M8-C5P150-02400 941-11T2-64917G-S must begin with diagnostics and testing of all linear stabilizers and power converters of its microcircuits. Sometimes it may be necessary to update the software (software) - flashing FLASH or EEPROM. Repair of the board and replacement of the TU301048 RAM8610 EN25B64 (16) microcircuits are performed if the necessary equipment and the corresponding element base are available. Failures associated with the use of BGA soldering technologies can be localized by warming up.
It should be remembered by users that attempts to repair the RUBIN RB-32K101U TV on their own without the appropriate qualifications and the necessary experience can lead to serious negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> schematic diagram download MST6M182
DOWNLOAD FIRMWARE FOR SPI FLASH -----------> RUBIN RB-32K101U, Main: 471-01A3-64201G, Cpu: MST6M48RHS-LF-Z1, Spi Flash: EN25Q32, Tuner: CDT-3FP212-31, Panel: LTI320AP01
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> MP01009 Power supply
The appearance of the MainBoard 471-01A2-58201G is shown in the figure below:471-01A2-58201G
Additionally by PSU
The MP01009 power supply module uses a Power Factor Correction (PFC) circuit to eliminate multiple AC harmonics introduced by the device into the mains. The PFC node is a Step-Up Converter based on the L6562D PWM regulator, which evenly distributes high-frequency pulses of the charging current of the electrolytic capacitor of the mains rectifier filter within a 50Hz period. The current of its charge in this case will already be determined not by its reactance (usually 10-30 ohms for the mains frequency), but by the elements of the converter. As a result, the change in the pulse amplitude (envelope) of the consumed current of the converter will repeat the shape and phase of the input sinusoidal voltage. The serviceability of the PFC unit is indicated by the presence of an increased voltage (about + 380V) in operating mode on the capacitor of the mains filter.
External view of the power supply
Key features of the RUBIN RB-32K101U device:
Installed matrix (LCD panel) LC320WXE (SB) (V2) or LTI320AP01 C01.
To power the backlight lamps, the MP01009-LG32 inverter is used, controlled by the SG3525AN (16pin) PWM controller // OZ9966SN (24). The transformer is installed in the inverter converter // LT-U3208 T1117DY. Keys of type KMB054N40DB, STU420S are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the RUBIN RB-32K101U TV is carried out by the MP01009 power module, or its analogs using L6562D (PFC), LD7535 microcircuits and power switches such as F13NK50Z, F3NK80Z.
MainBoard - the main board (motherboard) is a 471-01A2-58201G module, using TU301048 RAM8610 EN25B64 chips (16) and others.
Additional technical information about the panel:
Brand: LG Display
Model: LC320WXE-SBV2
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-IPS, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 13%), Hard coating (3H)
Brightness: 350 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit)
Response Time: 9 (G to G)
Frequency: 60Hz
Lamp Type: 10 pcs EEFL Without Driver
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V
RUBIN RB-32K101U LCD TV with LC320WXE LCD, 32 "(81 cm) 16: 9. Brightness of the screen of 500 cd / m² backlit by CCFL (EEFL) fluorescent lamps. Dynamic contrast ratio of 30,000: 1 is provided by special control of operation illumination depending on the illumination of areas in the scene.It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard graphic decomposition 720p (HD Ready) .Input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and shaping digital signal occurs in the standards 480i, 480p, 576i, 576p, 720p, 1080i Supported media 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, 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 140 watts.
Dimensions: without stand 786x531x100 mm.
TV weight: 12.5 kg.
Attention! The LC320WXE (SB) (V2) panel of the RUBIN RB-32K101U LCD TV is the most expensive component.
Avoid hitting the glass and putting pressure on the screen surface to avoid irreversible damage to the LCD panel!