SAMSUNG PLASMA TV REPAIR PN50A 550S

Fixing a 50 inch Samsung Plasma TV. TV went dead after last weekend NFL playoff games. With power disconnected, a continuity check revealed the main ceramic cartridge fuse had failed. Local supply dictated adaptation of alternative part.

This is not the switching power supply problem. I had that too, about a year ago. That is the problem where the TV just cycles on and off. The fix for that problem is replacing electrolytic capacitors on the power supply board, or replacing the whole board itself.

Category:

Science & Technology

Tags:

• Samsung
• Plasma
• TV
• failure
• repair
• PN50A550S

[FelixTheHouseFreak]

Interesting. Inside this set looks nearly identical to a broken LG plasma that I just got. Probably says something about what brands mean, or rather DON'T mean today! The only difference I can tell right now is that the y sustain board is slightly different.

Mine suddenly shuts off. Don't see any bulged caps but do see some suspected cheap brand caps. Can you tell me which caps fixed yours last time? Where they noticeably bulged?

[NG9D]

FelixTHF, the first time my Samsung PLASMA failed it was the on-off-on power problem. TV was 13 months old but Samsung agreed to fix it because it was a generic defect. They replaced the PS board. PLASMA TVs are energy hogs (mine draws over half kilowatt of power), they run hot and are prone to failure. Also PLASMA TV sets produce broad spectrum RFI (Radio Frequency Interference) to communications. I am saddened that the FCC ignorantly allowed PLASMA TV sets to be sold in the USA. 73 de NG9D

[NG9D]

"...what really blew the fuse?" Localmode, I am not sure. Narrowed it down to three broad causes: 1) external power surge (unlikely for a time lag fuse), 2) malfunction of the power supply, or possibly 3) the ceramic fuse had some kind of age related failure. If you have any ideas, let me know. PS- I reloaded video so I could make the warning more clear that all tests are done with no power applied. And there should never be a power connection with the cover off. 73 de Lynn, NG9D

[DunnDem]

@anjel33 ..im waiting for the answer to this too!!!...what ever happened with your Tv that was like 4 months ago

???

[ben00xx00]

I HAVE A BROKEN SAMSUNG TV ALSO. MINE HAS SOUND BUT NO PICTURE - DO YOU THINK IT COULD BE THE FUSE PROBLEM YOU MENTION?

[anjel33]

The same thing just happened to my tv, so i opened it up and checked the capacitors and they were all fine, but i did see a blown fuse on the power supply board. I replaced that, but the tv still doesn't work. Should i replace the other fuses as well or could it be something else? Any suggestions, help and/or advice will be greatly appreciated. Thanks

[NASIMNASIM]

That dog needs a good beating

[amdnovello]

The "what r u doin" dog is scary!! Lol

[mts0628]

NG9D, sorry for your losses but at least there was something you could do about one of them. Excellent video. I have one of these televisions that I bought in 2008 so this video may prove beneficial if the situation arises. As far as football, better luck next year. =D