Konka LC-TM2620 LCD TV black screen-Home appliance repair
Source: InternetPublisher:MartinFowler Updated: 2021/12/04
Konka LC-TM2620 LCD TV has a black screen.
Check that the power supply to the backlight board is normal and PBACK=0V. It seems that there is a problem with the motherboard. Check the DC-DC supply of the motherboard CPU: U802. Look at the picture and 
measure the resistance of U802 pin 3 to ground = 0 ohms. Check VD802 for short circuit. After replacing VD802 with a new one, the screen will not turn on for about 15 minutes.
I checked C814 again and found that there was no problem with C850. After replacing it with C813, everything was normal.
Latest Electronic Repair Circuits
- Energy-saving lamp circuit and maintenance
- Starcom UTS708-SY physical maintenance color picture 1
- 845ddr computer motherboard circuit diagram_14
- Computer motherboard circuit diagram 820 1_11
- Computer motherboard circuit diagram 820 1_26
- Computer motherboard circuit diagram 815 4_12
- Infrared transmitting circuit using amplitude modulation
- Nokia 3300 mobile phone troubleshooting actual color picture (2)
- 875p computer motherboard circuit diagram_053
- Computer motherboard circuit diagram 430TX_29
Popular Circuits
- Hisense Plasma TPW4218P Power Board Principle and Maintenance (Samsung V3 Screen Power Supply) - Home Appliance Repair
- Konka LC-TM2620 LCD TV black screen-Home appliance repair
- Hisense LCD TV TLM46V86PK sometimes makes strange noises when it is turned on, and the screen displays problems when it restarts - Home Appliance Repair
- Hisense LCD TV 42K431DX4F automatic shutdown fault repair example - home appliance repair
- Hisense LCD TV TLM42V78K crash repair example - home appliance repair
- Hisense TLM36H48 LCD TV has dark white raster and no image - Home Appliance Repair
京公网安备 11010802033920号