Lg 50pz560t
I have an LG 50pz570T with a black screen and no sound. It started when I switched on, changed channels and the whole screen turned a light purple then switched off. Have checked all the voltages as given in the service manual and they all check out OK. The standby led lights when plugged in and goes off when the on button operated and there is a very slight hum coming from the Y board so I am suspecting that but not been experienced enough I don't know. Any help would be most appreciated
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Re: Lg 50pz560t
Would you be able to supply pictures of the parts inside the set?
Do you have a digital multimeter available and do you know how to use it?
Pink tint sounds like Z sustain ("Z board" or "X-main")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. -
Re: Lg 50pz560t
Thanks for replying Tom .yes I do have a multimeter and am able to use it. As I said previously I have checked all voltages as described in service manual.All panel voltages plus all on connecters between boards.I am a bit pushed for time right now, work calling.I can sort some pics out later. But I have the service manual with all detailed pics.But I don't know the ruling on sending that. Thanks againComment
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Re: Lg 50pz570t (correction)
My apologies for not getting back to you sooner but here are some pics from the manual hoping they will be of help ...thanks
Attached FilesComment
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Re: Lg 50pz560t
Can you not supply pictures of your boards? The reason is, we can see some signs of damage/overheating, and sometimes manufacturers change boards mid-production.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 50pz560t
will doComment
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Re: Lg 50pz560t
These are the best pics I can get. If you require the rear of the boards I will have to strip them down later. The green led on the control board flashes but doesn't seem to follow a set pattern. As I said previous all the voltages on each board tally with the manual.Attached FilesComment
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Re: Lg 50pz560t
Can you get a picture of the sticker that has the internal plasma panel model number on it, e.g. "PDP50L9#####", will be marked, e.g. "LG Electronics Made in Poland". Note, this is NOT the back label with "50PZ560T" on it...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 50pz560t
Thanks for your patience Tom. Here's the picture of the panel label.Attached FilesComment
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Re: Lg 50pz560t
Ok, see page 139-149.
Follow steps on pg 143 & 148 to measure -Vy, Vsc and Vzbias.
DO NOT ADJUST ANYTHING YET. You do not need to use white wash as set is non functional and we just need a quick reading.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 50pz560t
The vsc reads 149.8, the vzb 124.9 and the vy 190.2v minus in reverseComment
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Re: Lg 50pz560t
Make the room as dark as possible (curtains closed, ligths off) - any glow from the screen, even slightly?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 50pz560t
As the on button is touched or remote button pressed the screen actually brightens momentarily as though its coming on then back to black.Comment
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Re: Lg 50pz560t
This board: https://www.badcaps.net/forum/attach...9&d=1426254676
There are two holes next to R54, R53, place a wire jumper between them and disconnect right most ribbon cable going to the main board.
Plug the set in.... what happens, any test patterns, display light, etc?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 50pz560t
White, red, green, blue, grey then half screen horizontally moves across then vertically.Comment
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Re: Lg 50pz560t
Good, provided screens look OK then main board is bad. Sigh, another bad LG plasma main board.
(This is the board with HDMI inputs, etc. on it.)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 50pz560t
Thanks for all your help Tom, strangely enough I usually watch films via USB a couple of weeks previous it wouldn't work then a couple of nights later it did work so maybe it was the start of the failure I don't know.Do you happen to know where to source these or is it not worth it.Thanks againComment
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Re: Lg 50pz560t
Normally Ebay,Google search EAX63525104 i think thats your board but ill be surpised if you find one LG main boards are very rare to sourceLast edited by sordids999; 03-14-2015, 11:13 AM.Comment
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Re: Lg 50pz560t
See what you mean been checking I notice there's a place that repairs them may give them a bell.....ThanksComment
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