Samsung plasma - faulty capacitors?

genetic

genetic

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So my 7 year old 42" Samsung plasma TV has started showing green snow and fuzzy images with vertical lines. I know plasmas are notoriously unreliable, so I opened the back and found 3 swollen capacitors on the power supply board.

I replaced the three dodgy 105C rated caps with 85C rated no name brands - the lines down the screen have semi disappeared, but the problem still persists. I'm wondering if maybe I should replace the other caps as well? I couldn't get 105c rated caps from Communica. Would this make a difference?

The image improved slightly with the replacement of the faulty caps, but maybe I need to replace more? I'm almost certain it's the power supply board.

20150919_190710.jpg
 
Just to add to that, the image gets worse over time once it's switched on.
 
Last edited:
Maybe try oversize the caps rather than undersize them? Prolly not a bad idea to replace the rest too. Check the caps on the panel too.
 
You'll probably find that the new caps have thrown the voltages out.

You'd need to check the recommended voltages on the cover or sticker or whatever and then adjust the various pots.

I don't know about the vertical likes bit I had green snow on mine that was someone alleviated after the pots were tuned to the factory spec.
 
SauRoNZA said:
You'll probably find that the new caps have thrown the voltages out.

You'd need to check the recommended voltages on the cover or sticker or whatever and then adjust the various pots.

I don't know about the vertical likes bit I had green snow on mine that was someone alleviated after the pots were tuned to the factory spec.
Click to expand...

I'll check it out, thank you. :)
 
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