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Old 02-27-2021, 07:10 PM   #1
starmaxpc
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Default LG 50ps60 Plasma Grainy/Fuzzy Horizontal

hi fellas. i picked a freebie locally it is a lg 50 inch plasma with display issue. tv turns on i can navigate thru the side button controls volume is good channel up down etc. looking thru the other postings on this system there seems to be a variance of different issues with this model. any direction as what would cause this display issue. sorry my pics are sideways as i don't have the stand and the darn thing weighs a ton. Thanks.
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Old 03-01-2021, 12:13 PM   #2
ReeceyBurger123
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

Looks like and older one, I’ve had mainboard failures countless amounts of times with this model-BGA solder fails on the CPU due to poor cooling, disconnect the main LVDS cable and on the control board P6 or Auto Gen you need to jumper pins 1 and 2 and the display will show a series of different colours. Let us know what happens.
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Old 03-01-2021, 12:21 PM   #3
R_J
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

I would try re-seating the flex cables between the panel and the buffer boards, I would inspect them for damage incase the last person was not careful with them. That might clear up some of the lines, If not I would check the buffer ic's for shorts.

Last edited by R_J; 03-01-2021 at 12:22 PM..
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Old 03-01-2021, 01:24 PM   #4
ReeceyBurger123
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

Quote:
Originally Posted by R_J View Post
I would try re-seating the flex cables between the panel and the buffer boards, I would inspect them for damage incase the last person was not careful with them. That might clear up some of the lines, If not I would check the buffer ic's for shorts.
Buffers I’ve seen mainly cause no image at all when they fail on these I’ve had a few but wouldn’t rule it out, doubt the set would run with both cards that bad.

Last edited by ReeceyBurger123; 03-01-2021 at 01:25 PM..
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Old 03-02-2021, 02:11 PM   #5
starmaxpc
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

Quote:
Originally Posted by R_J View Post
I would try re-seating the flex cables between the panel and the buffer boards, I would inspect them for damage incase the last person was not careful with them. That might clear up some of the lines, If not I would check the buffer ic's for shorts.
tried a re-seat on the flex cables. no change.
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Old 03-02-2021, 02:18 PM   #6
starmaxpc
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

Quote:
Originally Posted by ReeceyBurger123 View Post
Looks like and older one, Iíve had mainboard failures countless amounts of times with this model-BGA solder fails on the CPU due to poor cooling, disconnect the main LVDS cable and on the control board P6 or Auto Gen you need to jumper pins 1 and 2 and the display will show a series of different colours. Let us know what happens.
just to confirm.... if i have marked the right components..

main cable circled blue

pins 1 and 2 marked in red.

thanks.
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Old 03-04-2021, 07:26 AM   #7
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Default Re: LG 50ps60 Plasma Grainy/Fuzzy Horizontal

z sus failure
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