Question about Philips Televison & Video
I have had my tv for a couple years. no problems. last night it got black lines going horizontlly across the screen. thick and thin. also can see some red dots. It didn't go away this morning. still doing it. can you help?
This problem can be caused by several things,
-a connector on logic or address boards(in this case the lines would be localized to a half or less part of screen)
-a defective logic board that do not send the right address pulses to address board;
-a defective address board-but again it will impact only half or less of screen,
Tv needs a professional tech to be looked at.
There is 60% of chance you will need a new screen. The problem you may have is dead driver (part of a screen) or poor connection between plasma glass and ribbon wire connector.
There is some solution for it but not for long time. PDP panel and address driver on it not separated. If one of 26-40 drivers is going out, you need new screen.
It is a real question why manufacturers don't separate expensive PDP panel ($2000 and more) and $40 driver IC on it.
It is easier to replace small $40 part than the entire screen. So far they just ignore this issue.
Future plasma panel will be aluminum + glass + gas only.( no more drivers on it )
Other common problem with lines on screen -- buffer boards , high ammount of failure for these boards due to poor electronic design ( 1-- voltage needs to operate controllers on buffer board just to high for small SMD IC ,2---they are not strong enough to drive address electrode). In future it will be changed for more reliable parts .
Please leave me comment, if you need furthur assistance
Posted on Sep 30, 2009
What is the exact make and model?
Posted on Sep 30, 2009
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Posted on Jan 02, 2017
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