i dont have model numbers for you but... i have this 42" LG Flatron that works fine, but after about 15 mins (when it gets hot i believe) it starts acting weirdly. the image starts going rainbow coloured (while still retaining the underlying image)(hinting that the Sync is all fine right???) then after that the entire image goes a deep red, then finally the screen goes black (while still doing that fuzzy thing that all plasma's do, with a bit of red). any ideas whats wrong at all? just looking for a general idea...
LG Flatron 42" Plasma
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Re: LG Flatron 42" Plasma
The exact model is important; LG are well known for changing parts between their models and only adding e.g. a single "A" to indicate a revision.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 Flatron 42" Plasma
https://www.badcaps.net/forum/showthread.php?t=15937 <- found this, seems pretty similar to thisComment
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Re: LG Flatron 42" Plasma
so from what ive seen it could be the IPM failing due to a damaged PSU, so my logical assumption would be that i should start by acquiring an ESR meter and testing all the PSU caps correct? (and possibly other components) to ensure the fault will not replicate when i replace the IPM??? note: the tv is also emitting a loud staticy noise that i can confirm comes from both the PSU board and the Ysus and Zsus boards.Last edited by luke10050; 05-28-2013, 12:12 AM.Comment
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Re: LG Flatron 42" Plasma
The IPMs tend to fail on their own accord.
The PSU just needs to give good +180V (or Vs) and good 15V for the IPM to work, so if they are good, the PSU is probably 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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Re: LG Flatron 42" Plasma
ok i measured my Vs and it seems to be 183 volts... despite the panel saying 160v??? and i tried swapping the y-buffers, the lower buffer made it go all rainbow by itself, the upper normal. but the symptoms reappeared with the upper after 10 or so minutesComment
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Re: LG Flatron 42" Plasma
160V would be very low for this type of panel.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 Flatron 42" Plasma
I'd still expect a good image with Vs of 183V, though it may have a prominence of dead pixels. Not your rainbow effect.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 Flatron 42" Plasma
I am thinking ether -Vy bad, control board fault or main board fault. You can test -Vy on the Y-sus.
Picture of fault would help plus one of the chassis.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 Flatron 42" Plasma
The bottom is always blank? Or have you removed something?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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