Dear electronics Gurus,
I am looking for some advise that will help me to fix my Samsung plasma TV set Model PS43D490.
The issue started before several days ago with turning off the video output ((after cold start) to display while sound still worked properly (video/audio source is a satellite box connected by HDMI to tv set).
After powering-off and powering-on back video output showed back for some minutes and turned off again .. again .. and so several times until the TV set was probably heating up and everything goes work fine.
But before 2 day ago this issue stops and the new show began ...
Tv set does not turns off the picture, but the whole picture covered by red/green/purple tint ..(it depends on displayed picture, like a shadow of previous frame). So, after googling, I found this forum and started to read and found some usefull info about my issue.
After checking VS/VA/VCS voltages found them correct to the sticker values VS=207, VA=58, VCS=-185V (VCS was 1 volt below the sticker value, so I fixed this to the nominal voltage). The picture seems to look slightly better
but still there are a lot of red/green/yellow dots all over the screen ..
I did not found any visible circuits damage: no bad caps and something like this .. PDP worked for more that 13000 hours (according to tv set info), so I am wondering may it be the plasma panel problem, and may it be fixed?
My question is - do I need to replace some pcb (Ysus or X-main) or that the Pdp's problem?
Do I need to increase VS and VCS voltage above the sticker's values to fix my old plasma's picture? Or is it all useless, and I need to go shopping for a new tv set?
Any help is more that welcome!
I am looking for some advise that will help me to fix my Samsung plasma TV set Model PS43D490.
The issue started before several days ago with turning off the video output ((after cold start) to display while sound still worked properly (video/audio source is a satellite box connected by HDMI to tv set).
After powering-off and powering-on back video output showed back for some minutes and turned off again .. again .. and so several times until the TV set was probably heating up and everything goes work fine.
But before 2 day ago this issue stops and the new show began ...
Tv set does not turns off the picture, but the whole picture covered by red/green/purple tint ..(it depends on displayed picture, like a shadow of previous frame). So, after googling, I found this forum and started to read and found some usefull info about my issue.
After checking VS/VA/VCS voltages found them correct to the sticker values VS=207, VA=58, VCS=-185V (VCS was 1 volt below the sticker value, so I fixed this to the nominal voltage). The picture seems to look slightly better
but still there are a lot of red/green/yellow dots all over the screen ..
I did not found any visible circuits damage: no bad caps and something like this .. PDP worked for more that 13000 hours (according to tv set info), so I am wondering may it be the plasma panel problem, and may it be fixed?
My question is - do I need to replace some pcb (Ysus or X-main) or that the Pdp's problem?
Do I need to increase VS and VCS voltage above the sticker's values to fix my old plasma's picture? Or is it all useless, and I need to go shopping for a new tv set?
Any help is more that welcome!
Your very lucky to get 13000 hours out of one of them, they are some of the worst most cheap and crappy Plasma Tv's out there. Hope it lasts a good while
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