Technical description and composition of the TV TCL 26E92NH10, type of panel and applicable modules. The composition of the modules.TCL
Model: 26E92NH10
Chassis / Version: 40-MT01EU-MAI2XG
Panel: V260B1-LN1 Rev. C1
Lamp backlight: 4 Lamp CCFL
T-CON: 40-V260B1-TCB2XG; CM1671A-KQ, 24CO8
Inverter (backlight): integrated into PSU
PWM Inverter: SG3525A
MOSFET Inverter: 5A500V
Power Supply (PSU): MIP260T REV.A2
PWM Power: L6562 (PFC), LD7535 (PWM SOT26-3)
MOSFET Power: 13N50, 3N80
MainBoard: 40-MT01EU-MAI2XG
IC MainBoard: CPU: MT8200ALE, EEPROM: AT24C32, FLASH: S29AL016D70TFI02, HDMI INPUT: MT8293AE
Tuner: TEDE9-2C2B
Specifications 26E92NH10
General repair guidelines for TV LCD
Possible manifestations of defects
- The TCL 26E92NH10 does not turn on at all. The control lights do not light or flash. The TV on the remote control and the control panel buttons do not respond.
Often in such cases, the MIP260T power module is faulty. It is necessary to verify the presence of its output voltages and, if they are completely absent, check the power switches (13N50, 3N80) and rectifier diodes for a probable short circuit.
In case of breakdowns in the secondary circuits, the converter, as a rule, can emergency work in the short circuit mode, and during short circuit in the power elements of the primary circuit, the mains fuse usually breaks.
A breakdown of power switches (MosFet) in pulsed sources is sometimes caused by malfunctions of other circuit elements, for example, in circuits supplying a PWM controller, frequency-setting or damper ones, as well as in negative feedback (OOS) stabilization circuits. PWM controllers (PWM) L6562 (PFC), LD7535 (PWM SOT26-3), if they do not have visible damage to the case and open fault between the terminals, are usually checked by replacement.
- There is no image, but there is sound and reaction to commands from the remote control. Or the image appears immediately after turning on and disappears.
These manifestations can be triggered by a power supply module, or by inverter defects, as well as a distortion of the currents in the lamps due to their uneven wear. If all the electrolytic capacitors of the filter according to the inverter power supply are serviceable, you should make sure that the lamps are in good working condition, then you need to check the converter keys and the secondary windings of the transformers.
Sometimes, for diagnostic purposes, it is necessary to disable the inverter protection. In such cases, special care must be taken during work, and the protection circuits should be restored immediately after the repair is completed.
- The TV does not turn on, does not respond to the remote control. The indicator blinks or signals standby mode.
Repair or diagnostics of the 40-MT01EU-MAI2XG motherboard should begin by checking the stabilizers and power converters needed to power the chips and matrix. If necessary, update or replace the software (software). In cases of attempts to repair the MB (SSB) board, it is necessary to check the health of its elements - CPU: MT8200ALE, EEPROM: AT24C32, FLASH: S29AL016D70TFI02, HDMI INPUT: MT8293AE 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 conclusions with the board (it is diagnosed by heating).
In the absence of tuning to the channels of on-air or cable television, you should make sure that the software is correct, as well as in accordance with the ratings of the supply voltage at the terminals of the TEDE9-2C2B tuner. It is also necessary to check, using an oscilloscope, the presence of pulses of data exchange between the tuner and the processor via the I2C bus.
Owners of the 26E92NH10 TV are recommended for repairing contact only qualified specialists with the necessary work experience! Attempts to repair it yourself without the appropriate knowledge and skills can lead to irreversible negative consequences!
The appearance of the MainBoard 40-MT01EU-MAI2XG is shown in the figure below:
40-MT01EU-MAI2XG
40-MT01EU-MAI2XG can be used in TVs:
PHILIPS 26PFL3403S / 60 (Panel T260XW03 V.3), TCL 26E92NH10 (Panel V260B1-LN1 Rev. C1), THOMSON 26N90NH10 (Panel V260B1-LN1 Rev. C1).
The appearance of the power supply
Main features of the TCL 26E92NH10 device:
Installed matrix (LCD-panel) V260B1-LN1 Rev. C1.
The matrix control uses the Timing Controller (T-CON) 40-V260B1-TCB2XG ;.
To power the backlight, a converter is used, combined with a power supply, controlled by the SG3525A PWM controller. As power elements of the inverter, keys of type 5A500V are used.
The necessary supply voltages for all nodes of the TCL 26E92NH10 TV are generated by the MIP260T power module or its analogs using L6562 (PFC), LD7535 (PWM SOT26-3) microcircuits and 13N50, 3N80 type power switches.
MainBoard - the main board (motherboard) is a 40-MT01EU-MAI2XG module using CPU chips: MT8200ALE, EEPROM: AT24C32, FLASH: S29AL016D70TFI02, HDMI INPUT: MT8293AE and others.
The TEDE9-2C2B tuner provides TV reception and channel tuning.
Additional technical information about the panel:
Brand: CMO
Model: V260B1-LN1
Type: a-Si TFT-LCD, Panel
Diagonal size: 26.0 inch
Resolution: 1366x768, WXGA
Display Mode: TN, Normally White, Transmissive
Active Area: 575.769x323.712 mm
Surface: Antiglare (Haze 25%), Hard coating (3H)
Brightness: 450 cd / m²
Contrast Ratio: 800: 1
Display Colors: 16.2M (6-bit + FRC), CIE1931 72%
Response Time: 3/5 ( Tr / Td)
Frequency: 60Hz
Lamp Type: 4 pcs CCFL Without Driver
Signal Interface: RSDS (1 Channel), 45 pins
Voltage: 5.0 / 3.3V (VIN5 / VDD)