Question about Sylvania 6842THG 42 in. Plasma HDTV

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I have a Sylvania 6842THG and there is sound but no picture. Any ideas on how to fix it?

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Posted on Jan 02, 2017

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SOURCE: Help our sylvania 6842thg plasma

This is a common problem on Sylvania Flat Screen TVs (I have seen a lot of TV with this same problem), It is usually caused by a failure on the Power Board.

A new power board will cost about $150 - $190 USD. If you have experience on electronics repair and want to fix it by yourself, you can get the board through ebay or any online store.

A TV technician may charge about $280 - $ 400 to fix this issue (includin parts).

Read the user manual for warranty information. If the TV still under warranty, contact the manufacturer for assistance on repairs.

Posted on Nov 27, 2009

  • 87 Answers

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Here is a link to a hanging bracket that will work for your monitor. It is a true universal hanging bracket. You wont find a better one for the price.

Posted on Nov 09, 2009

  • 3 Answers

SOURCE: when you start light turns

DOES THE TV STAY ON ??DOES IT TURN OFF?...MOST CASES IS A FAILURE IN ONE OF THE POWER PROCESSING BOARDS..WHICH MEANS THAT HAS TO BE REPLACED..

Posted on Mar 18, 2011

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1 Answer

My TV (Sylvania 6842THG) wont power on


Sounds like one of the video cards inside the TV stop working or the plasma panel has stop working.

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My 42 inch sylvania hdtv screen is broken and not showing a picture


If the display panel (PLASMA DISPLAY PANEL--PDP) is damaged or broken etc it is fatal as the cost of the part alone will exceed the cost of a new set.

Oct 15, 2012 | Sylvania 6842THG 42 in. Plasma HDTV

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42" sylvania 6842thg plasma displays digital television and then shuts off after about 1 minute.


Evening It is not energy saving that is bothering you,is it? Try SET-UP and see if you can change it there. Good luck Kolbrun

Aug 24, 2012 | Sylvania 6842THG 42 in. Plasma HDTV

1 Answer

I HAVE A SYLVANIA 6842THG THE PROBLEM IS AFTER 15 TO 20 MINS IT GETS RED LINES ACROSS THE WHOLE SCREEN YOU CAN STILL SEE THE PICTURE AND HEAR IT FINE BUT HAVE STATIC RED LINES PLEASE HELP


i understood your problem, with your SYLVANIA 6842THG
there is main problem in your "picture tube's accelerating anodes".the best way to bring your TV to service center it may need to replace your picture tube.

Thanks for giving me opportunity to solve your problem..
please give your Rating!!

Jun 17, 2011 | Televison & Video

1 Answer

Help our sylvania 6842thg plasma display tv turns itself off after about 10-15 minutes?


This is a common problem on Sylvania Flat Screen TVs (I have seen a lot of TV with this same problem), It is usually caused by a failure on the Power Board.

A new power board will cost about $150 - $190 USD. If you have experience on electronics repair and want to fix it by yourself, you can get the board through ebay or any online store.

A TV technician may charge about $280 - $ 400 to fix this issue (includin parts).

Read the user manual for warranty information. If the TV still under warranty, contact the manufacturer for assistance on repairs.

Nov 27, 2009 | Sylvania Televison & Video

1 Answer

There was a power surge and a loud pop and now the tv will not power on. The red standby light is lit, but when I try to turn on the tv, the green power light flashes twice and then goes back to the red...


A job for the technician on this one. I have only worked on several flat screen before, on my last days as an electronic technicians. Half of the ones I worked on was the power supply inside ir the problem was like this. Instruction on how to fix them would require me to write many pages on electronic theory so, I am very sorry It is almost impossible for me to help you on that. Be carefull where you take that tv to. some shop can't fix those. You may have to search your local area for someone who specialize in flat sreen HDTV. Well I hope I have shed a little light on the problem. Thanx for posting the problem.

Jun 29, 2009 | Sylvania 6842THG 42 in. Plasma HDTV

2 Answers

Sylvania 42 in 6842THG


its actually very simple.If you can set-up a new computer you can do this too. It is just a bunch of connectors and screws. Take a picture of the wiring and then reinstall them one byone.

Jan 04, 2009 | Sylvania 6842THG 42 in. Plasma HDTV

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