Zenith Plasma TV Manual

Replace the fan. It is the best.

Plasmas are like tube TV's(CRT). Once the plasma tube breaks, air gets in, plasma gas gets out. And that's it. They are an enclosed vacuum picture tube. I don't know why people buy plasma. The newer LED have a much better picture. Rich people who swear by plasma, are ridiculous in my opinion. Again, if plasma tube breaks, thats it. Any wrong jarring can break a plasma tube.

Most likely buffer PCB

By thin line I assume its one pixel in width. A single pixel wide line is an indicator of a defective panel.

This is usually the power supply. It most likely will need to be replaced.

if it has only one fan, replace that but look to see if fan dusty or not.

I have seen ones with two identical fans and one made noise and the other did not, swapped them and then knew for sure which was the bad one, in that case better to replace both fans at same time.

This set is actually LG and have seen this question before on those--a quick call with the model number will give you the answer from Zenith--they are standard bolts available from Home Depot etc.

Sounds as if a cable connection is bad. Check the cables first. If cable are good, change inputs, if cables are bad replace cables. If it's component, make sure that red, blue or green didn't come loose on both sides...the tv and the source. If you still have problems, check for red video noise on the screen itself, preferably when it's on but with on input (black) If you notice this, your plasma is failing.

Sorry, man I have the same problem, with the same tv and player. Did you ever get a solution? LG Service Tech came out and his LG bluray player worked, whereas my Samsung didn't hooked to the TV. (It would spordically work going thru my HK254 AVR.)

He said either 1) the Samsung player was defaulting to a format that the Zenith being 3 years old could not decode (eg. 1080P) or that I might need to change inputs several times to get it to sync up or 3) by an LG Bluray player.

He said the Zenith was old and that newer sets are built with circuitry to help navigate the handshake easier. He couldn't find any service bulletins on it, and the one I got from LG he said didn't exist.

Place a warranty service request anyway. Many times with something that fails that close to the warranty period, the company will still cover it. If you get no where with the initial rep, speak to a supervisor +/or manager. This is too close to the warranty end and you should be covered. Be nice but firm in your disappointment with the product and you may get warranty service.

Keep us posted.
Dan