Lg 42pc1d

[kazzy]

Re: Lg 42pc1d

yes at both ends lol

[tom66]

Re: Lg 42pc1d

K, on the Z-sustain you have five red capacitors. What voltage do you get across any one of these capacitors? (They are all in parallel, you need to test only one.)

[kazzy]

Re: Lg 42pc1d

160v

[tom66]

Re: Lg 42pc1d

OK, seems quite high... there is a similar bank of 5 caps on the Y-SUS, it is underneath the large heatsink on it. Test the voltages there.

[kazzy]

Re: Lg 42pc1d

97V next :P

[tom66]

Re: Lg 42pc1d

There's a fault on one board then. The voltage should be nearly the same between boards. I'm leaning towards the Z-sustain because I have not heard of an ERC voltage that high.

[kazzy]

Re: Lg 42pc1d

what does ERC voltage mean and how could I further diagnose this/ rectify the problem? replace the board? :/

[tom66]

Re: Lg 42pc1d

ERC = Energy recovery, used to recover energy which would otherwise be lost in the plasma panel, to improve the panel efficiency.

Problem is, it's very hard to diagnose without an oscilloscope. Plasmas always are.

Now, if the Z-sus was bad, I would expect you would still get an image, but it would be dim. Too dim to be usable but still visible. But it is possible you have two faults.

[kazzy]

Re: Lg 42pc1d

well the original fault was the color was distorted until the TV warmed up (couple of minutes) the picture was like a yellow/orange color. if that's any help?

[tom66]

Re: Lg 42pc1d

That points more to the Y-sustain, so it does help. I just wish I could be more precise.

[kazzy]

Re: Lg 42pc1d

I left the TV on to warm up and you still get a little flicker when you switch the TV on and off by flicker I mean the white bits around the screen when it switches on and off ha but definitely no picture I sat pushing menu and ok etc for minutes lol and nothing was happening at all.

[kazzy]

Re: Lg 42pc1d

Any idea if I can try anything else to further diagnose before I buy bits?

[flocko]

Re: Lg 42pc1d

Hi Kazzy if you look though to the top of the Av board do you see any red LED's when the set is on you should have 4

[kazzy]

Re: Lg 42pc1d

yea i think there is all 4

[flocko]

Re: Lg 42pc1d

ok if you lift the Av board up out the way you will see on the control board the ribbon that go's to the ysus check that is home on both ends and the clips are ok.

[kazzy]

Re: Lg 42pc1d

sorry folks I went on holiday and forgot about this thing, well the ribbon looks to be okay and connections secure so and other things to check

[kazzy]

Re: Lg 42pc1d

anyone got any further diagnosis?

[kazzy]

Re: Lg 42pc1d

I'm going to order a replacement Y-SUS board of ebay and see if that works

[newtothis]

Re: Lg 42pc1d

Ok may be a silly question... have you tried shining a flashlight onto the panel when its switched on? maybe see a picture?

[kazzy]

Re: Lg 42pc1d

there is no picture at all but when you switch it on/off you can see a white flicker around the edge of the screen