LG Plasma 50PC1DR- Y-SUS Issues

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

i will try that right away. thanks

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

Re - lag: decrease -Vy a little, if it gets worse, increase it.

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

hehe okay. well im giving up on that input board, theres one for 30$ on ebay, that will do it.

i guess like you said there's something hardwired for the 42 or an option into the cpu. anyhow..

i got another issue weeee, im gonna be good with plasma issues someday ! the issue is, that i got some lag in the picture on one i just put back together.

everything works.. its just the picture redraw is somehow, laggy.. its slow to be refreshed.

ive checked, all the voltages are present and good, i messed a bit with the vsustain voltage, didnt change much. its laggy .. what can cause this behavior ?

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

It could be for example an option-bit burned into the main processor, which is not changeable. I don't know for sure.

The service menu only controls the settings on the input/main board, assuming it is the one for the 50", then it would be sending a 50" signal.

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

what do you mean hard wired for 42'' ?

i have 2 identical input boards, with same rom versions and same components. everything is identical hardware wise so it's something programmed into either an eeprom, a cpu, a rom or any programmable chip

i was wondering if it was configurable into the service menu maybe ? i will continue swapping chips later, need to work a bit now

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

It might be the control board is hard wired for 42". I wasn't aware they were swappable anyway.

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

im still swapping chips. i really tought it was in a small eeprom..

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

argh. where do you think panel configuration is stored, on that board ?

http://assets.shopjimmy.com/media/ca...0/003_4_16.JPG

so far ive swapped the 2 tsops ic105/6, ic602 the 24c eeprom, then ic202 over the tsop the 24c eeprom, then ic111 another eeprom.. no go

i hope its not stored in the cpu, dammit

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

do i need a remote, is it in the service menu ?

eh, do you have a clue where is the panel information stored into, is it the tsop rom chips ? hehe

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

D'oh!

You need to access the menu and select ISM Method (forget exactly where it is), then White Wash.

42" is 1024x768. 50" is 1366x768.

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

i forgot the board in the oven while over the phone.. lol

this one's dead. oh well, at least ive got a replacement from the broken screen 42'' seems its the same board

im swapping the from tsop chips right now.. cauz when installed, i had only 42'' of the screen working.. and the same blue lines

i really dont know whats causing this thing to bug, but it's sure bugging me.

i will check in a few minutes if it affects the menu. how can i access the white wash mode? i have no remotes (have some coming from china in a week or 2, tho)

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

Does the problem affect the menus?
How is it on the white wash mode?

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

im cooking the input board in the oven. trying a reflow..

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

its just a jumper, there was a few more around.

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

Picture?

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

looks someone was here before me. there was 2 pads shorted, a component called SLIT100. what could this refer to ?

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

its not the same, and i was wrong AGAIN...

for some reason the issue re-appeared. damn, this one is tough. as soon as i ground the input board (put it on the frame) the lines appear. with the board floating not grounded the issue is not there.

does that mean a component is shorted or close to on that input board ?

[tom66]

Re: LG Plasma 50PC1DR- Y-SUS Issues

Didn't you have a cracked screen 42 inch model, or am I getting confused here... thought that the LVDS might be the same for that model.

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

i was wondering - are all those lvds cable similar, as far as pinout goes ?

ive found a cable, but idk if it would work.. just dont wanna fry things

i'd guess it's ok since lvds is usually standard.. but.. im not sure

http://www.ebay.com/itm/LVDS-Cable-f...item2a2352fc37

would that be ok ?

// edit : oh well, it seems its about the same tv, the toshiba 50hp66.. same boards or very similar design.. i'll buy that one

[cheebster]

Re: LG Plasma 50PC1DR- Y-SUS Issues

bad lvds cable !!!!

completely stopped after replacing it.

i've tried reflowing a lot of stuff including the lvds connector on control and input boards, but it really stopped after replacing the lvds cable from other tv.

if i put it back it reappears instantly. at least i know now !!

thanks for the support guys !!!