Tuesday, 28 April 2020

REPAIR / SERVICING TV HYUNDAI H-LCD3202

Technical description and composition of the HYUNDAI H-LCD3202 TV, type of panel and applicable modules. The composition of the modules.
Hyundai
Model: H-LCD3202
Chassis / Version: B.TR901E
Panel: LTA320AB02
T-CON: 320AB02CP2LV.03; LMX4122T0
Inverter (backlight): SSI320A12 REV0.6
PWM Inverter: OZ9966SN
MOSFET Inverter: STU426S
Power Supply (PSU): S0513-1
PWM Power: TNY266, TDA16888, LM393N
MOSFET Power: 11N60C3
MainBoard: B.TR901E CVT-LF MS-1E198407
IC MainBoard: SVP-AX68, EM6A9160TC-4G, TDA9886TS, W25X80A, 24C64
Tuner: TDQ-6F6 / T1260W
Technical Specifications H-LCD3202
HYUNDAI H-LCD3202
General recommendations for repairing TV LCD
Repair of the HYUNDAI H-LCD3202 must begin with the diagnosis of the malfunction and a thorough inspection of its external and internal components, including the case ones. Any external damage can sometimes prompt the repairman to take further steps to determine the malfunction of the TV and localize the defect. Experienced repairmen are often aware of the causes of the defect and possible consequences, for example, from ring cracks in the soldering of the leads of the elements, as well as from swollen capacitors or resistors burnt to coal dust and other external indirect signs.
In the case when the H-LCD3202 does not turn on, does not respond to the remote control and buttons on the front panel, does not blink lights and does not show any signs of operability, most likely in this case the power supply S0513-1 is faulty. If the mains fuse is broken in the power supply, in most cases a breakdown of the power switch 11N60C3 is detected, which can be integrated with a PWM controller, or a separate field-effect transistor can be used. The rectifier bridge diodes and the electrolytic capacitor of the mains rectifier filter should also be checked.
As a rule, the keys of flyback converters, which use an N-Fet field effect transistor on a separate radiator, or integrated with a TNY266 TDA16888 LM393N PWM controller into a single chip, are quite reliable and rarely fail for no reason. The reasons for the breakdown of the key should be sought by checking other components of the circuit - electrolytic capacitors, resistors and semiconductor elements of the primary circuit. The PWM chip is verified by replacing it with a known good one.
Diagnostics of power modules with a Power Factor Corrector (CMC) is somewhat more complicated and requires a more detailed approach.
If, when you turn on the TV, the image appears and immediately disappears, or is initially absent when you turn on, but there is sound and other functions work, there is a high probability of a malfunction of the inverter (power converter for the backlight). In such cases, the lamps, the inverter and the common power module are subject to verification, in which the electrolytic capacitors of the rectifier filter supplying the inverter should be checked.
Diagnosis and repair of the inverter is often complicated by the organization of special protection circuits, which is necessary for fire safety and turns off the inverter in any emergency situation, for example, when the lamps are worn or depressurized. Often, to localize a defect, its blocking is required.
In such cases, the risk of failure of the power elements of the inverter is most likely, and special care is required during work, and after their completion, it is necessary to restore the protection circuit for further safe operation of the TV by the owner in normal mode.
Diagnosis and repair of the motherboard SVP-AX68 is carried out by checking the performance of power stabilizers or updating the software (software). If it is not possible to replace the MB (SSB) card, it is necessary to check the health of its elements - TDA9886TS, W25X80A, tuner TDQ-6F6 ... Faulty components should be replaced.
Attention to the owners! Attempts at self-repair of the  TV are not recommended by the manufacturer and can lead to serious negative consequences!

FIRMWARE FOR SPI FLASH  ----------->   HYUNDAI H-LCD3202, Main: B.TR901E CVT-LF MS-1E198407, Panel: LTA320AB02

 HYUNDAI H-LCD3202  Service Mode: SLEEP - 120 minutes, SOUND - MOVIE, press the green button: 1- option, 2- option, 3- exit.

Repair MainBoard
The appearance of the MainBoard B.TR901E is shown in the figure below:
B.TR901E
B.TR901E can be used on TVs:
AKAI LTA-26N573HCA (Panel T260XW02 V.6), HYUNDAI H-LCD3202 (Panel LTA320AB02), IZUMI TL32H413B (Panel LTA320AB02).
Main features of the device HYUNDAI H-LCD3202:
Installed matrix (LCD-panel) LTA320AB02.
The matrix control uses the Timing Controller (T-CON) 320AB02CP2LV.03 ;.
The SSI320A12 inverter is used to power the backlight, controlled by the OZ9966SN PWM controller. As power elements of the inverter, keys of the STU426S type are used.
The necessary supply voltages for all nodes of the HYUNDAI H-LCD3202 television are generated by the power module S0513-1, or its analogs using TNY266, TDA16888, LM393N microcircuits and 11N60C3 type power switches.
MainBoard - the main board (motherboard) is a B.TR901E module, using chips SVP-AX68, EM6A9160TC-4G, TDA9886TS, W25X80A, 24C64 and others.
The TDQ-6F6 / T1260W tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AB02-W03
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: S-PVA, Normally Black, Transmissive
Active Area: 697.685x392.256 mm
Surface: Antiglare (Haze 14%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 3000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 8 (G to G)
Frequency: 60Hz
Lamp Type: 12 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 41 pins
Voltage: 12.0V
HYUNDAI H-LCD3202 TV with a 32 ”(81 cm) diagonal LCD display in 16: 9 format. The brightness of the screen is 500 cd / m² by CCFL (EEFL) fluorescent lamps. Contrast, as the ratio of maximum brightness to minimum, is 2000: 1. It is possible to view images in high quality HD at a resolution of 1366x768 pixels in the standard of graphic decomposition 720p (HD Ready). The input high-frequency or video signal can be processed in analog systems PAL, SECAM, NTSC. Graphic processing and digital signal generation takes place in st ndartah 480i, 480p, 576i, 576p, 720p.
The power of the sound system 12 W (2x6 W) provide two speakers. The audio processing system NICAM STEREO is used.
The external interface (communication with other devices) is supported by standard input and output connectors: antenna input (RF), AV, S-Video, component, SCART x2, RGB, VGA, HDMI x2.
Overall dimensions: 964x561x250 mm.
Attention! The HYUNDAI H-LCD3202 LCD TV panel LTA320AB02 is its most expensive component.
Avoid hitting the glass and exerting pressure on the screen to avoid permanent damage to the LCD panel!