No Picture or Audio on Insignia NS-LCD26

[adlegs]

Re: No Picture or Audio on Insignia NS-LCD26

That voltage is OK, it is a 3.3V regulator.

Are there more than one I need to check on the Main Board? or should I just replace the Main Board?

[budm]

Re: No Picture or Audio on Insignia NS-LCD26

That is the only I can see, but I think there are more switching power supplies on the main board, I do not have any more suggestion for this repair unless you can get a hold of service manual.

[adlegs]

Re: No Picture or Audio on Insignia NS-LCD26

That is the only I can see, but I think there are more switching power supplies on the main board, I do not have any more suggestion for this repair unless you can get a hold of service manual.

Thanks for all of your help!!! I was just trying to make sure it was the Main Board before I spent the money. Again I really appreciate the help!

[Doom2pro]

Re: No Picture or Audio on Insignia NS-LCD26

I have this TV and had to repair it due to it not turning on, which started as being hard to turn on, having to hold the power button down longer.

I could hear the power supply's regulation loop cycling over and over as I held the power button down, so I took my soldering iron and heated up each electrolytic on the secondary side and it started to make a high pitch wine and the TV turned on. I cooled them with canned air (held upside down) and tried to turn the set on again, the power supply would cycle over and over without turning on. Heating the capacitors up caused the set to power on.

Diagnosis: Capacitor's ESR too high, heating temporarily lowers ESR.
Fix: Replace following capacitors...

2 x 35V 1000uF
3 x 25V 1000uF
2 x 16V 470uF

All capacitors were replaced with 105C Rubycon and Nichicon brand capacitors, and the set turns on without issue now.