samsung 58 inch plasma

[adamp91gvm]

Re: samsung 58 inch plasma

getting the same reading from the top pin on the black connector

[adamp91gvm]

Re: samsung 58 inch plasma

View My Video

[tom66]

Re: samsung 58 inch plasma

OK, now try without buffers; any change? Y-main is looking bad.

[adamp91gvm]

Re: samsung 58 inch plasma

I'll have to check it tomorrow I'll do it as soon as I finish thank you for your help so far mate its very much appreciated

[adamp91gvm]

Re: samsung 58 inch plasma

Can they be fixed ? Also would that transitor being slightly different make any difference

[tom66]

Re: samsung 58 inch plasma

Without schematics, you're likely to spend a lot of money and time fixing it. Beyond my time, at the moment, at least; you're free to try yourself. The X-main should be checked next, I'll attach an image when you're ready.

[adamp91gvm]

Re: samsung 58 inch plasma

Checked the board with out buffers and readings don't change

[tom66]

Re: samsung 58 inch plasma

Will check X-main tonight, when I get back from uni.
Just for comparison, here's a Y-sustain(=Y-main) output test on a Fujitsu/Hitachi plasma panel I was testing: http://www.youtube.com/watch?v=nGr5ydz9gTk&t=3m10s

[adamp91gvm]

Re: samsung 58 inch plasma

Hi mate just tried it on the same blue thing on the x main and got a much better reading

[adamp91gvm]

Re: samsung 58 inch plasma

any more checks i could do on the y main ?

[tom66]

Re: samsung 58 inch plasma

Could you show X-main waveform.

[adamp91gvm]

Re: samsung 58 inch plasma

Here It goes up and down a bit though

[tom66]

Re: samsung 58 inch plasma

Still doesn't look right - show me where you're probing please.

[adamp91gvm]

Re: samsung 58 inch plasma

The blue one like the other side

[tom66]

Re: samsung 58 inch plasma

Which lead of that; top or bottom?

[adamp91gvm]

Re: samsung 58 inch plasma

top

[tom66]

Re: samsung 58 inch plasma

The wave should look better if X-main were working, then.
Check that the X- and Y-main boards are both getting Vcc.
Could be a bad control board.

[adamp91gvm]

Re: samsung 58 inch plasma

i think it might be the control board too there is a glass fuse on it thats only got power to one side nothing at all to the other just where the power comes into it i was just going round it before just checking everything if that makes any sense ??

[tom66]

Re: samsung 58 inch plasma

Where is this fuse?

[adamp91gvm]

Re: samsung 58 inch plasma

Here I just took it off to have a look at the back