lg ps3000

[tonyuk]

Re: lg ps3000

pic could i test from bottom

[tom66]

Re: lg ps3000

...? I need the flip side of that board.

[tonyuk]

Re: lg ps3000

just changed it lol

[tom66]

Re: lg ps3000

So, if you are testing it right, ICs #2, #3 and #4 from top on the bottom buffer board are also suspected bad.
I do not think this is correct as if you have Vsc/-Vy with bottom buffer in, there should be no shorts.

[tonyuk]

Re: lg ps3000

So, if you are testing it right, ICs #2, #3 and #4 from top on the bottom buffer board are also suspected bad.
I do not think this is correct as if you have Vsc/-Vy with bottom buffer in, there should be no shorts.

ok i refit bottom buffer in morning and test all again do i remove the little ribbon the fits the up and low buffers in the middle

[tonyuk]

Re: lg ps3000

ok so done them again today and vsc and vy up and down so gues there a fault with ysus aswell that blew the buffers any idear how to find whats gone on this ysus and if theres a repair kit for them ? thanks tom

[tom66]

Re: lg ps3000

With both buffers out, do you have steady Vsc and -Vy?

[tonyuk]

Re: lg ps3000

With both buffers out, do you have steady Vsc and -Vy?

both out do you mean leave right out of tv ?

[tom66]

Re: lg ps3000

Leave orange ribbons connected, but disconnect from Y-sustain.

[tonyuk]

Re: lg ps3000

Leave orange ribbons connected, but disconnect from Y-sustain.

ok so with them out i get the right outputs for both as board sticker

[tom66]

Re: lg ps3000

This seems to indicate bad buffer boards.

[tonyuk]

Re: lg ps3000

This seems to indicate bad buffer boards.

ok emos tv on ebay have some they seem to have good feedbk so might try them

[tom66]

Re: lg ps3000

From my experience, they don't test the parts sufficiently, so make sure to test before installing the boards.

[tonyuk]

Re: lg ps3000

From my experience, they don't test the parts sufficiently, so make sure to test before installing the boards.

ok whats best place to get them ? top buffer is ebr55460001 bottom buffer is
ebr55460101 also how much r new ic i cant seem to find any

numbers on ic 849aha then ecn32193 l6v52231 h0510 pn thats all numbers on ic

[tonyuk]

Re: lg ps3000

just removed 4 ic and still get beep on meter any idears ?

[tom66]

Re: lg ps3000

Which ICs did you remove? Picture of the boards as they are?

[tonyuk]

Re: lg ps3000

there was burnt one so removed that and still got meter beep so removed more still getting beep im testing on middle pin of p216 then geeting beeps on p203

[tom66]

Re: lg ps3000

That's really odd. I can't explain the results. Same location as before?

[tonyuk]

Re: lg ps3000

That's really odd. I can't explain the results. Same location as before?

im getting same thing with top buffer and ic out im sure im testing it ok ?

[tom66]

Re: lg ps3000

Can you show me what connector pin you're using for the other end of the testing?