20 Most Recent Sylvania 6842-PEM 42 in. EDTV-Ready Plasma Television - Page 2 Questions & Answers

Have fixed a bunch of those as a Sylvania ASC. There is a small ceramic capacitor on the main power PCB that has ruptured. It must be replaced with a different part, a special type of capacitor, or it will just fail again. Sylvania had recommended replacing the main power PCB rather than repair because sometimes there was additional damage on the board, however replacing the capacitor fixed every one that came to us. I preferred that because some electrical voltages have to be adjusted if the circuit board is replaced with a different one.

No, it will not work (I tried it - twice!). Here is a link to the replacement part I used, and this fixed the problem - TV works great now.

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

Good luck!!

your transformer on your power supply is bad, i would recomend replacing the power supply, usually when the transformer goes bad , it damages other things on the board, should be around a 200$ part

I had the same issue. Turned out to be a blown capacitor on the power board.
<a href="http://s133.photobucket.com/albums/q68/rwlib3/?action=view&current=DSC_0426.jpg" target="_blank">

The defective capacitor, if that is the problem, is not obvious. But the main power board has a standby mode and an operating mode. Many of the outputs are off in the standby mode. Do the output voltages go on when you press the power button? The tv draws considerable current when the power turns on, about 7 amps, and less then 1/2 amp when off. Do you have a way to monitor the current?
If the capacitor is the problem, it needs to be replaced with one with a Y5P dielectric or it will overheat and burn out again in a short time. Of the main power boards that I had in for repair, about one out of three had a problem other than the burned capacitor.

Too late now but I hope you had it serviced while it was still on parts warranty. With a couple of exceptions, service on those is by major pcb replacement.

Blown Capacitor C2250 on the main Power supply. Little blue capacitor.
http://i133.photobucket.com/albums/q68/rwlib3/DSC_0426.jpg
I have a couple left.

Sounds like a blown capacitor. I fixed the same problem in mine by replacing it with this one:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

If you can do a little bit of soldering, you can fix it yourself. Good luck!

So it comes on and then shuts off? how long does it stay on?

We found the blown capacitor on the main power board, bought a replacment for 40 cents, and replaced it. The monitor is working again.

Here is a link to the replacement I used:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

This fixed the problem for me - the TV works fine now. Good luck.

If you are certain that the capacitor is OK, there could be a different problem on the main power board or even on the sub-power board. The sub-power board should have output voltages even if the main power board is defective.

email me with more details at [email protected]

Is it always in the same place? Most likely one of the driver boards is defective.

[email protected]

This RadioShack capacitor is no good - too low a voltage rating. Try replacing it with this one, or something with the same values:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

This fix worked for me. Best of luck

Here's a good replacement for that burnt out capacitor:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND


Good luck!

You need to replace the burnt out capacitor - the little blue disk on the upper left side of the power circuit board. Here's a link to a replacement that works:

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

Just solder the new one in and it should work fine. Mine works great with this replacement. Good luck

http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail?name=490-4260-ND

This will help a few people out there. This is the Service Manual for this TV

ZENITH_Z50PX2D_Parts_Service_Manual.zip

http://www.techiesworld.com/manuals/ZENITH_Z50PX2D_Parts_Service_Manual.zip

I hope this helps you and the others out.

Good Luck.

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