I received a LG 50PC3D plasma where the whole picture flashes white & grey. When I have a DVD player hooked up I do hear sound but have the same flashes on all inputs. Thank you for any info you can give.
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Last edited by barryra; 10-05-2014, 08:21 PM. -
Re: LG 50PC3D Screen Flashes White & Grey
Do you hear a faint ticking sound coming from either the left or right of the back of the TV? -
Re: LG 50PC3D Screen Flashes White & Grey
HI cliff, yes... but very faint clicking...Comment
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Re: LG 50PC3D Screen Flashes White & Grey
Sounds like the Y-Sustain board. This is one of the two faults that panel experiences from a failed IPM on the Y-Sustain. The other being a completely black screen with sound.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
Thanks Aaron... I also read the buffer boards would need replacing also. Is that usually a good idea?
I saw Coppel TV repairs the ysustain for $139.... HmmmmmComment
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Re: LG 50PC3D Screen Flashes White & Grey
Usually not necessary to repair buffers on these unless your TV shows other faults like vertical bar.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
You may find a used one for slightly less but that repair service isn't a bad price and they'll test the buffers for you as well. You do not necessarily need to replace the buffers as a failed sustain rarely has any adverse affect on the buffers in this model.
Edit:
Tom beat me to it.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
I've used Coppel's TV to repair a Ysus when I first started repairing TVs for a hobby.
It costs more, but you get a guaranteed working board and fast turn around.
You can replace the IPMs on the boards yourself, but unless you have some fairly
good soldering skills and the proper equipment, it would be best to get it repaired
by folks that have experience doing it.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
You guys are the best! If you were close... I'd buy you a beer/malt.
It looks a little complicated on how to take out the ysustain & buffer boards.. I should be able to figure it out. Coppel TV said to send the buffers also.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
Having done many of this V7 and X3 series, I usually find its the Z-SUS IPM that gives this fault and not the Y-SUS one.....TELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: LG 50PC3D Screen Flashes White & Grey
Ohhh great! Are you kidding? Everyone else says it's the ysustain....Comment
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Re: LG 50PC3D Screen Flashes White & Grey
Just sayin'.....
Still, IF its not your Y thats gone, you can always swap over the IPM's, they are same type on both boards,-- YPPD-J018CTELEFIX
How PLASMA SCREENS WORK, X-SUS and Y-SUS what they do--
http://www.irf.com/technical-info/appnotes/an-1088.pdf
PLEASE DO NOT EMAIL ME PRIVATELY FOR REPAIR ADVICE. QUESTIONS BELONG ON THE FORUM!Comment
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Re: LG 50PC3D Screen Flashes White & Grey
It was the Ysus on mine. Take the back off and listen carefully to both boards.Comment
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Re: LG 50PC3D Screen Flashes White & Grey
I checked to fuse on the ysustain (on left faceing from back) & it was good. Does this mean the board is good?Comment
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Re: LG 50PC3D Screen Flashes White & Grey
No, the Y-sustain can still be bad even if the fuse is good.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment... -
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No picture. No sound that I can tell. Backlights are on and have been checked. Flashlight test no image on screen. I replaced the Eprom chip hoping that was the problem but nothing changed.
Please help. Thanks in advance! -
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