Source
r/TVRepair•
resrep2

Parents' old Samsung TV doesn't turn on, indicator LED is off

[Problem]

The exact model is Samsung LE32B450, it's old and low end but they don't want to replace it if possible, they don't care about picture quality.

The standby LED not working means it's probably a power issue? I checked the cable and the power outlet and both work fine so I opened the TV and took some pictures of the PCBs here, right click view image in new tab to get higher resolution.

I don't see anything wrong with the capacitors and there isn't any obvious damage anywhere, I switched the fuse but it wasn't that either. The little PCBs on the side with the buttons and the indicator LED seem fine too.

Posted Sep 16, 2021, 10:19 AM UTC

15
minion71•

Edit nm have not read all the text but look if theain board get voltage

1
resrep2OP•

You mean with a multimeter like in this video? I don't have a multimeter, is there any other way?

1
minion71•

To diagnose electronic the multimeter is the minimum tool to have. Next ia oscioscope.

1
minion71•

Other way os to guess and swap board may be power board or mainboard or powerboard killed mainboard .... hard to tell

1
resrep2OP•

I see, thank you. First I will see if I can even find a replacement board and what they cost, then if it makes economical sense to replace I will test further.

1