General Ysus and Zsus Question

[dcapper]

I have a Daytek tv made by LG. I get all the voltages perfect and I get green dots. I have been helped regarding this problem in other threads. This is the question I have. I have adjusted the Ysus that I just replaced. Voltages are perfect but my Vsetup is supposed to be 200v. No matter how much I adjust those I can't get 200v, it's locked in at 205v. I don't think the 5v will make a difference. Now the second problem. On the Zsus, I adjust the pot and on other tv's the pixels will change colors. Well on this one, I can turn it right down or right up and no change on the tv. Is the Zsus failing on this tv or am I missing something. The power supply has the right voltages too.

[Alastair E]

Re: General Ysus and Zsus Question

Try reducing the Vs by 5V and adjust Set-Up/Set Dn carefully to reduce the spots....

The Vset volts being locked suggests something wrong with the DC/DC converter deriving it....

If still no good, it probably needs firmware upgrade of Control-Board.

[tom66]

Re: General Ysus and Zsus Question

I've experienced the same as you. I've swung the Ve (equiv. to Vzbias) from 80 to 130V on a Samsung plasma, and not the slightest change to the pic!

[dcapper]

Re: General Ysus and Zsus Question

Thanks guys. I'll try to lower the Vs. There also is a dip switch on the power supply. I'm not in front of it but I think it says 24v or 30v?

[tom66]

Re: General Ysus and Zsus Question

I wouldn't change it, chances are you could damage something on the main board.

[dcapper]

Re: General Ysus and Zsus Question

I wouldn't change it, chances are you could damage something on the main board.

I definitely won't touch it. I'll lower the Vs just a little and see if that helps. So many of these plasmas sitting in my basement with the pixels. Drives me crazy!

Tom did you ever figure out why the adjustments did do anything?