Question about Sylvania 6842THG 42 in. Plasma HDTV

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We recently experienced a power outage and our Plasma TV did not come back on afterwards. I have read about similar problems but we do not have a red led. I have removed the back panel and have checked every fuse I could see (5) total. The power supply board is readily available and reasonably pricedand looks easy enough to replace but not sure if it is the actual problem or not. Any ideas as to how to troubleshoot the board or should I be looking for something else. TV just turned 4 years old and has had minimal use and is/was in excellent condition and hate to dump it if it is something I could possibly fix myself. TKS

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The problem with these sets is you have to gamble.

If power outage, it is most likely on the power supply board-------only way to confirm this is test voltages to see if are there or not, do you follow me?

Fuses can look good but also need to be "tested".

Let me know if I can help, I am here to help.


Posted on Nov 06, 2010

  • Gina68 Nov 08, 2010

    This is exactly the same problem I am having. Initially the power light came on (no picture or sound), blinked a few times, then went to the red standby light. I changed the power board to a brand new one that there was no change whatsoever.

    Unfortunately, I fiddled some more with it and now I cant even get it to power on (obviously missed something). Aside from that, the new power board didnt fix the problem and all fuses tested fine. What can I try next?



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