Rep: 13
1
1
My 40” RCA LED TV has no power or led lights lit. I tried unplugging, holding on the power button for 1 minute, waiting 10 minutes and then nothing. I do hear a clicking sound at regular 3 to 5 second intervals when I plugged it back in but nothing else. Here’s internal photos, what should I try next?
Ist dies eine gute Frage?
Rep: 453,2 Tsd.
11
368
1,4 Tsd.
Hi,
Have you got a DMM (digital multimeter) and know how to use it?
Check that the fuse on the power board is OK
After that measure the output voltages on the power board and check their values.
As there are lethal voltages on the power board, if you don't know what you're doing then leave it for the experts to test
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3 Kommentare
Hi Garisit, for first, exchange all electrolytic capacitors on the power board and logic board.
von Lucas
I appreciate your time and help but this repair is beyond my abilities and professional repair is not cost effective. It's a shame that this tv with very few hours of use will simply be thrown away in today's disposable society.
von garisit
Hi @garisit ,
the TVs are consumer items, the design of PCBAs has been created with a focus to 2 years warranty, so they usually use the capacitor, without regardless to "long time using". If you will put your TV to the "non-authorized service", the repairman will start by exchanging all capacitors. (no the tantalus capacitors), this is "troubleshooting guide" for repair centres from the suppliers, 1 - Remove dust, 2 - Check the corrosion, if it's existing, exchange PCBA, 3 - Place a new capacitor with the same specs. 4 - Exchange PCBA - PCBA repair is not advantageous.
Maybe, if you will buy a new TV, let this TV in your house, search something about soldering, buy a soldering kit and try to exchange capacitors, for fun, in every electronics components shop, the capacitors cost about 0,5€ /pcs, so it's cheap. Then, to be sure, measure the connectivity between capacitors and PCBA. Nothing more can be measured on the capacitors. :)
von Lucas