I am trying to repair a single-board LED Insignia TV.
Model NS-39D220NA16
When plugged-in, the red standby LED lights for about 1-second and then goes out. It will not come back on until unit is unplugged and then plugged back in.
Rinse and repeat.
I have no schematics and the board is not marked very well.
On the underside of the board, I did find a test point for 1.15v Standby and that reads 1.17v.
There is also a 5v Standby and that does read 5v.
I have tested all diodes and they appear Ok as do the transistors that I could identify and check. (Tested using ohm readings and Diode mode)
All caps look very good but I have not unsoldered and checked although I plan on doing that.
Any suggestions on what to check next?
Model NS-39D220NA16
When plugged-in, the red standby LED lights for about 1-second and then goes out. It will not come back on until unit is unplugged and then plugged back in.
Rinse and repeat.
I have no schematics and the board is not marked very well.
On the underside of the board, I did find a test point for 1.15v Standby and that reads 1.17v.
There is also a 5v Standby and that does read 5v.
I have tested all diodes and they appear Ok as do the transistors that I could identify and check. (Tested using ohm readings and Diode mode)
All caps look very good but I have not unsoldered and checked although I plan on doing that.
Any suggestions on what to check next?
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