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LG -RZ-42PX11 y-sus board

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Ron-TV:
Hi All
Back about this y-sus board i have now ordered a replacement board!
The fault i was getting was when tv was first switched on the picture would come on and it was a good clear picture although it did have a few sparklies all over the picture, Then after about 5 miniuts the picture would start to be unstable and go very bright like a negative picture and then the picture would go all together.
I have read up the faults on this set and from what i can see is the ipm has gone faulty on the y-sus board and hopfully a replacement should cure this fault. I am hoping it has not caused any damage to any other componants on any other boards it was mentioned that on the back of the control board there are some grey pads and these have a sticky resin and that can become conductive and cause some problems so i have removed this board and cleaned of this resin, I will keep you all posted on how things go with this set .
In the meantime if anyone has any additional info to add i am all ears.

Kind regards to all Ron-TV
 :c017:

Turnip:
Hi Ron,

From your last have a feeling that a piccy of fault you describe might be useful.

All the best with your Y-Sus - Chris.

Ron-TV:
Hi All
Well i am still having problems with this set i have now changed the y-sus board and it seems the problems are worse ! the picture will only come on when it feels like it i will if i can upload some pics of the screen it sometimes has a grey band down each side of pict about 3" wide. And it flickers on/off it has sparklies all over the screen and is very unstable It looks like it will need more boards giving the fact this is not hd i am thinking is it worth the cost of replacement boards it has already cost £65.00 for the y-sus board if any one knows where i can get cheep replacement boards or even has any replacement (cheep) boards then maybe it would be worth the repair !! who knows ?
 :03:

brainstorm:
Hi Ron,

I'm not an LG expert, but when i see sparklies and LG together, then I always think control board!

I have had a few LG's which usually sparkle when cold(particularly on dark backgrounds) and that is
usually mal discharge of the PDP, which on some models you can 'reprogran' the control board using a Jig from LG. Or i have had to change the control board on some others.

But, I'm a bit worried by the bands down the picture, although I suppose that could be being caused by the control board, I would make sure you check all the caps in the PSU with an ESR meter first.

I think TV tony is the resident LG expert he may be able to pint you in the right direction

Brian

Ron-TV:
Thanks Brian
For your input on these problems, I have had thoughts of it being the control board so have ordered a replacement board and of course will check the caps on the power board. I have tried to contact Tony tv via e-mail and phone but can not make contact, Maybe he is on his summer break?
Any way will see how i get on when i have changed the control board and will keep all posted as to out come.

Thanks for your help Kind regards Ron-TV

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