lg ps8000 vertical lines

[tonyuk]

hi guys been offerd this 60" tv lg ps8000 tv has vertical lines that move could this be fixed or do you think its the panel itself any help plz thanks again

should also say the lines change in colour

[tom66]

Re: lg ps8000 vertical lines

90% panel...

[johnboy1313]

Re: lg ps8000 vertical lines

Post pictures.

[tonyuk]

Re: lg ps8000 vertical lines

pics

[tom66]

Re: lg ps8000 vertical lines

The lines move? Do they follow bright picture content.
Probably not panel...

Could be a Vsc or -Vy voltage problem, or a control board issue.

[tonyuk]

Re: lg ps8000 vertical lines

yes tom the lines move dont realy see them on black screen ive up vs and va but no change ?

[tom66]

Re: lg ps8000 vertical lines

Do NOT increase Va. You will fry the panel! Make sure it is set to stock rating. I would also leave Vs at stock setting, as the problem isn't likely to be caused by low/high Vs.

I'd start by checking -Vy and +Vsc; if you need help with this post the LG Electronics PDP50K9##### (or similar) number which is written on the rear panel of the plasma screen.

[tonyuk]

Re: lg ps8000 vertical lines

thanks tom PDP60H30001 i turn vs va up to what says on sticker

[tom66]

Re: lg ps8000 vertical lines

OK, I got the panel doc.



Check page 220 for Vs/Va
Check page 222 for -Vy/Vsc
Check page 226 for Vzbias

[tonyuk]

Re: lg ps8000 vertical lines

thanks tom ill have a read

[tonyuk]

Re: lg ps8000 vertical lines

done them tom now got this

[tom66]

Re: lg ps8000 vertical lines

Did you adjust them to match the panel sticker? What were they measuring before?

[freakaftr8]

Re: lg ps8000 vertical lines

Looks like -Vy is increased too much. I'd jumper control board test patterns.

[tonyuk]

Re: lg ps8000 vertical lines

Did you adjust them to match the panel sticker? What were they measuring before?

they was 1v some 2 v out to low do you know if my spair board ebr54863601 would fit . looked on ebay and for same model theres diffrent part numbers for the ctrl

[tom66]

Re: lg ps8000 vertical lines

50PS3000 is a completely different model, with a different panel, so I would say no it won't work. In general you can't put 60" CTRL in 50" TV or vice versa because the drive waveforms are bad.

I'd try tweaking -Vy to get rid of the pink. Then focus on Vsc. What are your -Vy and Vsc supposed to be?

[tonyuk]

Re: lg ps8000 vertical lines

50PS3000 is a completely different model, with a different panel, so I would say no it won't work. In general you can't put 60" CTRL in 50" TV or vice versa because the drive waveforms are bad.

I'd try tweaking -Vy to get rid of the pink. Then focus on Vsc. What are your -Vy and Vsc supposed to be?

well checked borad with my spair and found that the board numbers match but not the sicker number the one i gave you so fitted it and gues what
no vertical lines looks 90% better lol done the volts checks again with info you gave now just get green/ blues on light pictures ? but cant be seen on some dark pictures

[tom66]

Re: lg ps8000 vertical lines

Well, it could be because 50" and 60" are different panels - pic of fault?

[tonyuk]

Re: lg ps8000 vertical lines

Well, it could be because 50" and 60" are different panels - pic of fault?

if i adjust vy and vyc i can get rid of the green/blue ? and get clear pic ?
will pic up in morning as in uk times is now 104am lol will also take pic of both boards for you like i said all number on the board do match just not sticker strange

[tonyuk]

Re: lg ps8000 vertical lines

pic for you

[tonyuk]

Re: lg ps8000 vertical lines

both boards check numbers sure should work