Re: LG 50PA4500 not turning on
remeasured across the components and -vy is 190vdc and vsc is 150vdc which match the sticker.
remeasured across the components and -vy is 190vdc and vsc is 150vdc which match the sticker.
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Re: LG 50PA4500 not turning on
remeasured across the components and -vy is 190vdc and vsc is 150vdc which match the stickerComment
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Re: LG 50PA4500 not turning on
Ok plug the buffer back in and check the voltages again. See if they drop.
Probably should have mentioned this at the start, but when the tv is on does the panel glow?Comment
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Re: LG 50PA4500 not turning on
When plugged in and buffers hooked up voltage at -vy and vsc are off the scale on my fluke 26 III.
And the panel does not glow.
FYI: All the readings are when the tv is plugged in and not pressing the power button to turn it on, pressing power button does nothingComment
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Re: LG 50PA4500 not turning on
Initial thought is bad buffer boards.
Have you tried running the tv with the buffer boards you had originally.
Have you checked them for any shorts?Comment
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Re: LG 50PA4500 not turning on
I tried the original upper buffer and no change the original lower buffer has a surface mount cap burned up at c818Comment
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Re: LG 50PA4500 not turning on
Ok do you know how to check the buffers for shorts?Comment
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Re: LG 50PA4500 not turning on
I did check them for shorts per the video on one of these postComment
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Re: LG 50PA4500 not turning on
The buffer you have bought has probably been taken from a plasma with a cracked screen.
If the screen was cracked when the tv was on it might have blown one or more of the buffer ICs.Comment
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Re: LG 50PA4500 not turning on
It was from a cracked srceenComment
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Re: LG 50PA4500 not turning on
Sorry just re-read on of your posts.
The power button does nothing?
Have you tried running test patterns?Comment
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Re: LG 50PA4500 not turning on
No, will it run test patterns in this state and how do you run themComment
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Re: LG 50PA4500 not turning on
look at the control board.
Does it have 2 holes marked 'ext auto gen'?
If so jump the 2 holes with a bit of wire.Comment
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Re: LG 50PA4500 not turning on
And unplug the LVDS cable to the mainboardComment
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Re: LG 50PA4500 not turning on
control board do you mean logic boardComment
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Re: LG 50PA4500 not turning on
YesComment
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Re: LG 50PA4500 not turning on
Small board middle of the tv.Comment
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Re: LG 50PA4500 not turning on
Ok I found the holes. LVDS cable, is this the ribbon cable to the logic boardComment
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Re: LG 50PA4500 not turning on
YesComment
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Re: LG 50PA4500 not turning on
no change with holes jumperedComment
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