LED TV troubleshooting
- Disconnect the mother board from the power supply the led will come on when plugged on the mains , that’s a sign that the power supply is good. Change the motherboard.
- You can also isolate all the cables from the power supply and just where the motherboard cable connects jump the power on pin to Standby pin and all the voltages indicated should be present if not the power supply is bad you may need to change it.
- Check smps ic power and eprom and stabilizer ic
- Check motherboard
- Check PSU
- Sometimes the microcontroller is short
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