Hi everyone,
I'm working on an Insignia NS-37D20SNA14,
original issue was it would come on play for a while then turn itself off,
It could be turned back on when it auto shutoff but would only run for about 30 sec to 1 minute or so before shutting off again..
I found bad connections on the led strip junctions, so i soldered wires across each strip since flexing the connections or swapping the strips around didn't help anything..
The TV seems to stay on longer now but the power board is making a really bad buzzing noise or whine.. this buzzing was there before i started disassembly tho
it's not that noticeable with the back panel installed on it at first but it gets louder the longer the set runs,,
if i disconnect the led plug the buzzing stops..
I've checked the ESR on all electrolytic capacitors and pulled all safety caps and checked them on the cap check function of my DMM, all seem to be fine.
I'm wondering if one might be breaking down when current is flowing thru it or something,,
Has anyone else run across this issue and found the solution for it?
I'm working on an Insignia NS-37D20SNA14,
original issue was it would come on play for a while then turn itself off,
It could be turned back on when it auto shutoff but would only run for about 30 sec to 1 minute or so before shutting off again..
I found bad connections on the led strip junctions, so i soldered wires across each strip since flexing the connections or swapping the strips around didn't help anything..
The TV seems to stay on longer now but the power board is making a really bad buzzing noise or whine.. this buzzing was there before i started disassembly tho
it's not that noticeable with the back panel installed on it at first but it gets louder the longer the set runs,,
if i disconnect the led plug the buzzing stops..
I've checked the ESR on all electrolytic capacitors and pulled all safety caps and checked them on the cap check function of my DMM, all seem to be fine.
I'm wondering if one might be breaking down when current is flowing thru it or something,,
Has anyone else run across this issue and found the solution for it?
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