Technical description and composition of the THOMSON T32C81U TV, panel type and modules used. The composition of the modules.THOMSON
Model: T32C81U
Chassis / Version: T.MS6M181.12B
Panel: LTA320AP05
T-CON: A320AP20S4LV0.4
Inverter (backlight): SSI320_4UA01
PWM Inverter: OZ9966SN
MOSFET Inverter: STU432S, KMB054N40
Power Supply (PSU): KPS-L110C2-01 35015462, 34007554
PWM Power: FSQ0765R, FSQ0465
MainBoard: T.MS6M181.12B
IC MainBoard: MST6E181VS-LF-Z1, 25Q64
Tuner: AFT7 / W130G
Control: IR: MSD6M16GS 35013807
Appearance
THOMSON T32C81U
General recommendations for TV LCD repair
Possible manifestations of malfunctions
- THOMSON T32C81U 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.
In some of these cases, the main switching power supply, the KPS-L110C2-01 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 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.
Breakdown of Mos-Fet switches used in switching power supplies is often caused by malfunctions of other elements, for example, in the power supply circuit of the PWM controller, in frequency setting or damper circuits, as well as in negative feedback stabilization. PWM microcircuits (PWM) Q0765R, Q0465 are usually 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
These manifestations can be provoked by the power module, or by defects in the inverter, as well as by the skew of currents in the lamps due to their uneven wear. After checking all the electrolytic capacitors of the filters that are involved in the power supply of the inverter, ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open circuit.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protective circuits must be restored immediately after the repair is completed.
- 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 T.MS6M181.12B 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). Sometimes it is necessary to check or replace (if necessary) elements of the MainBoard - MST6E181VS-LF-Z1, 25Q64. In cases where a BGA processor is used, its malfunction is usually detected by a local warm-up method.
The malfunction of the AFT7 / W130G tuner is established after checking the software and all supply voltages at its terminals. The data exchange of the tuner with the processor via the I2C bus can be monitored with an oscilloscope.
Owners of the T32C81U TV are advised to contact only qualified specialists with the necessary experience for repair! Attempts to repair yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> KPS+L110C2-01 Power supply
The appearance of the MainBoard T.MS6M181.12B is shown in the figure below:T.MS6M181.12B
External view of the power supply
The main features of the THOMSON T32C81U device:
Installed matrix (LCD-panel) LTA320AP05.
Matrix control uses the Timing Controller (T-CON) A320AP20S4LV0.4.
To power the backlight lamps, the SSI320_4UA01 inverter is used, controlled by the OZ9966SN PWM controller. The keys of the STU432S, KMB054N40 type are used as power elements of the inverter.
The formation of the necessary supply voltages for all nodes of the THOMSON T32C81U TV is carried out by the KPS-L110C2-01 power module, or its analogs using FSQ0765R, FSQ0465 microcircuits.
MainBoard - the main board (motherboard) is a T.MS6M181.12B module, using MST6E181VS-LF-Z1, 25Q64 and others.
The AFT7 / W130G tuner provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: SAMSUNG
Model: LTA320AP05-107
Type: a-Si TFT-LCD, Panel
Diagonal size: 31.5 inch
Resolution: 1366x768, WXGA
Display Mode: PVA, Normally Black, Transmissive
Active Area: 697.68x392.25 mm
Surface: Antiglare (Haze 7%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 4000: 1
Display Colors: 16.7M (8-bit), CIE1931 72%
Response Time: 20 (G to G)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 12.0V