no picture on my samsung 50 inch plasma

[capkid]

Re: no picture on my samsung 50 inch plasma

So does that mean there might be something wrong with the y board if it is feeding Ve to x board?
Im just throwing stuff out there

That's what I was trying to get my arms around, and I was hoping Tom could assist with deciphering that statement.

[jose6326]

Re: no picture on my samsung 50 inch plasma

We have to wait for him. I know he is busy helping everyone on here

I love this site

[tom66]

Re: no picture on my samsung 50 inch plasma

So, you have low Ve on X-main?
Do you have low -Vsc too?

[jose6326]

Re: no picture on my samsung 50 inch plasma

Vs 205.1
Va 54.1
Vsc -195.2
Ve 72.5

Please see above

[tom66]

Re: no picture on my samsung 50 inch plasma

Ve is a little low... but not a big deal, it's usually got approx +/-20V tolerance on these panels.

[jose6326]

Re: no picture on my samsung 50 inch plasma

Did you see the waveform I posted for xmain?

Should I order the main board or what else should I test?

[tom66]

Re: no picture on my samsung 50 inch plasma

The X-main waveform looks better than the Y-main.

[jose6326]

Re: no picture on my samsung 50 inch plasma

I will retest ymain and post pics of waveform

I am changing spark plugs on my car right now

[jose6326]

Re: no picture on my samsung 50 inch plasma

Ok tom I retested but I did 2 things which I will mske 2 separate posts

1st I put back in the original xmain and xbuffer to see if the wave pattern changed
To me it pretty much looks the same
But the Ve us a little bit higher but not much
Ve: 73.4v

[jose6326]

Re: no picture on my samsung 50 inch plasma

2nd I retested the ymain

Any other suggestions?

[tom66]

Re: no picture on my samsung 50 inch plasma

Were the both at the same V/div?

[jose6326]

Re: no picture on my samsung 50 inch plasma

yes i didnt change any settings

[tom66]

Re: no picture on my samsung 50 inch plasma

Can you try dropping the intensity and changing the focus to make the trace sharper? I can see most of both sustain waveforms so it should be working, not sure why it is not.

[Evan09]

Re: no picture on my samsung 50 inch plasma

I have the same problem to and know nothing about tvs. Caps are not visibly bad. It's a 51" samsung plasma. Mine does everything you guys have been talking about except the dark room. It does not illuminate. At first there's a fuzzy red flash at the top of the screen then nothing besides a little LED light on the bad flashing. I need help

[capkid]

Re: no picture on my samsung 50 inch plasma

It's probably best to start your own thread, including the model number.