Red and Green Pixels why?

[dcapper]

I have replaced Ysus boards, buffer boards, and STK chips. When I am done I make sure all the voltages are perfect as per the panel sticker. But yet I still get a little amount of pixels in the top corners of the tv. No matter how much adjustments I make, they never go away. They are hardly noticeable but they are still there. Is this normal? My other Plasma's in the house don't have them.

[tom66]

Re: Red and Green Pixels why?

This is called maldischarge and is a common fault with older LG plasmas. To fix it, a firmware update is required:
https://www.badcaps.net/forum/showthread.php?t=29263
https://www.badcaps.net/forum/showthread.php?t=35176

[R_J]

Re: Red and Green Pixels why?

Try droping the VS voltage a bit, see if that helps, You may have to adjust vsetup and vsetdn also Panels do age over time, the older LG's were bad for this. sometimes firmware on the ctrl board needs to be updated and can help.
You also need to put the make and model in your post, bet you get a better response if you did.

[dcapper]

Re: Red and Green Pixels why?

Of course they are both LG's. Well one is an Akai made by LG. The model of the LG is 50PC3D. The model of the Akai is PDP42Z5TA. So where do I find firmware upgrades for them? Oh and I adjusted every pot on the Ysus and the Zsus. I didn't touch the power supply, it was reading fine.

[tom66]

Re: Red and Green Pixels why?

You need an expensive jig to do it. Capkid offers the service for about $25. It's well worth it, I've used him before.

[dcapper]

Re: Red and Green Pixels why?

I have a 46" 1080P LCD in the living room and I was going to replace it with this older 50" plasma but the LCD is only a few years old. Maybe I'll just sell it. I paid only $120 after it was all said and done.

[dcapper]

Re: Red and Green Pixels why?

I forgot to add. I replaced the lower driver board and one of the tabs was cracked. So I taped it down. Would that cause the green and red pixels?

[tom66]

Re: Red and Green Pixels why?

No. It is maldischarge as above.

[dcapper]

Re: Red and Green Pixels why?

As usual, thanks Tom. You make these forums great.