Question about Samsung HP-R4262 42 in. Plasma Television

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Samsung 4254 Plasma keeps shutting itself off and then clicks like it is trying to turn itself back on. Sometimes it does turn back on and then shuts off again and keeps doing this over and over. The TV is 3 years old.

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Take the back off the tv follow the power cord it will connect to an electrical board. Look at the board carefully you will find a few capacitors look at the top of the caps they should all appear flat if you see any that are bulged or expanded then more then likely that is your problem. I just had the exact same problem with my 50 inch plasma and I fixed it. I removed the back of the tv located two swollen caps unsolder them from the board tested them with a meter and confirmed that the larger 50volt 1500 uf 105deg was indeed burnt and the smaller swollen one 35v 1500uf was still good but changed it anyhow just because it looked like it didnt have much life left.

Posted on Apr 06, 2011

  • dojr413 Apr 15, 2011

    I agree with marky always look for caps first but also if your not confident in changing out caps or unsure how to test you can always buy the whole power supply board on sites like eBay.com and shopjimmy.com

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I just picked up the same tv today I noticed after a couple min it shuts off and clicking same as yours. I took the cover off and it seemed to stay on longer but same thing. Then I tried running a small fan next to the power supply and It ran no problem for an hour straight you can try this without taking the cover off and aim it at the top air vent on the back cover. Runs flawlessly now. I am going to Look into stealing a fan out of another plasma I have laying around or ordering one that will match a voltage I can splice into off the power supply board preferably the smaller the voltage the better. It's a pretty crappy design for a samsung. I don't know if this will help you or not but good luck.

Posted on Apr 19, 2011

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I hope this helps. Joe

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