Technical description and composition of the THOMSON 32MT02Y1 TV, panel type and modules used. The composition of the modules.THOMSON
Model: 32MT02Y1
Chassis / Version: MT-02
Panel: V320B1-L04 Rev. C1
T-CON: 1320B1-16A. T-CON V320B1-C04
Inverter (backlight): integrated into MainBoard
PWM Inverter: OZ964GN
Power Supply (PSU): 40-MON37A-PWD1XG
PWM Power: VIPer22A, NCP1653, NCP1377B, LM393
MOSFET Power: 2SK3568, STW20NM50
MainBoard: 40-MT02ME-MAE4XG
IC MainBoard: CPU: MT8202AG, EEPROM: 24С32, NAND FLASH: S29AL016M90TFI02
Tuner: 1320B1-16A. T-CON V320B1-C04
Appearance
THOMSON 32MT02Y1
General recommendations for TV LCD repair
Possible manifestations of defects
- THOMSON 32MT02Y1 TV does not turn on. There are no signs of operability. The indicators on the front panel do not light or blink, the TV does not respond to control buttons.
In some of these cases, the main switching power supply, the 40-MON37A-PWD1XG module, is faulty. It is then necessary to measure its output voltages and, if they are absent, the power switches (2SK3568, STW20NM50) and the rectifier diodes of the converters should be checked for the probability of a short circuit.
In case of any breakdowns in the secondary circuits, the converter can operate in an emergency mode of a short circuit, and with a short circuit in the power elements of the primary circuit, the mains fuse or the current sensor at the source of the key is often cut off.
Mos-Fet power switches used in switching power supplies sometimes fail due to a malfunction of any other elements that can disable it in the key mode, or create an excess of the maximum permissible key parameters. These can be elements supplying a PWM regulator, frequency setting or damper circuits, or elements of negative feedback in the stabilization circuit. PWM controllers VIPer22A, NCP1653, NCP1377B, LM393, in the absence of visible damage or outright short circuits between the terminals, are checked by replacing them with new ones, or known to be working properly.
- There is no picture, but there is sound, it reacts to the remote control. Or the image appears when turned on and disappears immediately
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, you should ring the power switches in its converter for breakdown and the secondary windings of the transformers for an open.
If, when diagnosing a malfunction, it is required to turn off the inverter protection, there is a risk of failure of the power elements of the inverter, and special care is required during work, and after they are completed, it is imperative to restore the protection circuits for further safe operation of the TV by the owner in normal mode.
- The indicator blinks or is on constantly, the TV does not turn on, does not respond to the remote control.
Repair or diagnostics of the 40-MT02ME-MAF4XG 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). In some cases, to repair the MB (SSB) board, it may be necessary to replace the chips - CPU: MT8202AG, EEPROM: 24С32, NAND FLASH: S29AL016M90TFI02 with new or known good ones. In cases where BGA technologies are used, defects are usually localized by heating.
If you suspect a malfunction of the 1320B1-16A tuner. T-CON V320B1-C04, first of all, you need to make sure that the software is correct, as well as the presence of the required levels of supply voltages and pulses of data exchange with the processor via the I2C bus on the corresponding pins of the tuner.
Remember! Attempts to self-repair the THOMSON 32MT02Y1 TV, in the absence of the necessary qualifications and experience, are categorically not recommended and are fraught with negative consequences, up to the complete non-repairability of the device !!!!!!!!!!
DOWNLOAD SCHEMATIC DIAGRAM / SERVICE MANUAL ------------------> 40-MON37A-PWD1XG Power supply
The appearance of the MainBoard 40-MT02ME-MAE4XG is shown in the figure below:40-MT02ME-MAE4XG
External view of the power supply
The main features of the THOMSON 32MT02Y1 device:
Installed matrix (LCD panel) V320B1-L04 Rev. C1.
The matrix is controlled by the Timing Controller (T-CON) 1320B1-16A ..
To power the backlight lamps, a converter is used, combined with the main board 40-MT02ME-MAE4XG, controlled by the OZ964GN PWM controller.
The formation of the necessary supply voltages for all nodes of the THOMSON 32MT02Y1 TV is carried out by the 40-MON37A-PWD1XG power module, or its analogs using the VIPer22A, NCP1653, NCP1377B, LM393 microcircuits and 2SK3568, STW20NM50 power switches.
MainBoard - the main board (motherboard) is a 40-MT02ME-MAE4XG module, using CPU: MT8202AG, EEPROM: 24С32, NAND FLASH: S29AL016M90TFI02 and others.
Tuner 1320B1-16A. T-CON V320B1-C04 provides reception of television programs and tuning to channels.
Additional technical information about the panel:
Brand: CMO
Model: V320B1-L04
Type: a-Si TFT-LCD, Panel
Diagonal size: 32.0 inch
Resolution: 1366x768, WXGA
Display Mode: Super MVA, Normally Black, Transmissive
Active Area: 708.954x398.592 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 500 cd / m²
Contrast Ratio: 1200: 1
Display Colors: 16.7M (8-bit), CIE1931 75%
Response Time: 6.5 (G to G)
Frequency: 60Hz
Lamp Type: 16 pcs CCFL Embedded (Inverter)
Signal Interface: LVDS (1 ch, 8-bit), 30 pins
Voltage: 5.0V