Lg 42pc3d

[Aquarius89]

Hey there, I have my beautiful ( but at the moment useless) LG 42". I have studied some of the forums with similar problems in the same model ( No picture, but sound) And heard that the problem could be minor or fairly major. Its important to not that I have ZERO experience, but some mild back ground working on computers ( building them), I was still absolutely lost when i pulled the frame off the back of this beast.

So, I need some assistance obviously with trouble shooting while I do a Google search for maybe finding some sort of technical manual in PDF format.

[PlainBill]

Re: Lg 42pc3d

The service manual can be found at Elektrotanya. It's the second on the list.

This TV is notorious for failures in the Z-Sustain and the Y-Sustain, commonly the hybrid. The hybrid is expensive ($40) and difficult to remove. There are a number of repair services on eBay, or you may find a new or repaired one available. A failure of the Z-Sustain results in a very dark picture, with a faint image visible at the right side. A failure in the Y-Sustain results n a completely black screen.

PlainBill

[Aquarius89]

Re: Lg 42pc3d

I read a another thread that suggested shining a bright LED light at the screen to see if there is any color at all, I attempted this and its completely black, but the screen does "prime" with no picture at all. and this is likely the Z-sus you say? Might I ask the technical level of replacing it.

[tom66]

Re: Lg 42pc3d

I read a another thread that suggested shining a bright LED light at the screen to see if there is any color at all, I attempted this and its completely black, but the screen does "prime" with no picture at all. and this is likely the Z-sus you say? Might I ask the technical level of replacing it.

That's an LCD thing.

If you have the "prime" glow from the plasma, the Y-sus is quite likely okay. I would say Z-sus. A quick check: Turn on the TV for 30 mins, then turn it off. Feel the heatsinks of the Y-sus and Z-sus. Are either warm?

Can you post a pic of the Z-sus? There are usually a few fuses on them that can sometimes blow even without a fault.

[PlainBill]

Re: Lg 42pc3d

I read a another thread that suggested shining a bright LED light at the screen to see if there is any color at all, I attempted this and its completely black, but the screen does "prime" with no picture at all. and this is likely the Z-sus you say? Might I ask the technical level of replacing it.

Lose the colors. You really don't want to do anything that makes it difficult to read your posts.

Replacing the Z-sustain is moderately easy. Four or five mounting screws, 5 connectors (one of which is a pain), and one adjustment to do after installing the replacement. It's a lot easier than pulling the back off- those metal edges are sharp!

PlainBill

[muskin]

Re: Lg 42pc3d

If you have a meter you can check the fuses. My z-sustain board blew one of the fuses and I just replaced the board. Pretty simple like Bill said.