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jbltecnicspro
Joined: 23 Apr 2016
Posts: 512
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| Posted: Wed Aug 04, 2021 4:35 pm Post subject: Plasma TV issues |
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Good morning all,
Was gifted an old Sony plasma. Decent TV for the kids. One thing I've noticed is that after it's been on for 30 mins, it develops a thin vertical line on the left end of the panel. Sometimes it's a different color than the rest of the content, and sometimes on red it's black. Anyways...
What should be a first step to troubleshoot/fix this? The set was made in 2004. I was going to take it apart and see if the cables need to be reconnected to the panel. Anything else? Thanks,
jbltecnicspro
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Aug 04, 2021 9:46 pm Post subject: |
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Bad panel or driver board. Generally, a bad panel.
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jbltecnicspro
Joined: 23 Apr 2016
Posts: 512
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| Posted: Wed Aug 04, 2021 10:13 pm Post subject: |
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| Curt Palme wrote: | | Bad panel or driver board. Generally, a bad panel. |
Could you expand on this? I’m only really versed in the workings of CRT’s. Guess I’m a dinosaur.  . What’s going bad on the panel?
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Mon Aug 09, 2021 2:45 pm Post subject: |
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The panel itself it likely going. Do the stripes come and go, OR are they there all the time just changing colors?
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Mon Aug 09, 2021 6:38 pm Post subject: |
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| jbltecnicspro wrote: | | Curt Palme wrote: | | Bad panel or driver board. Generally, a bad panel. |
Could you expand on this? I’m only really versed in the workings of CRT’s. Guess I’m a dinosaur. . What’s going bad on the panel? |
Plasmas have two boards generally driving the panels, one for the X and one for the Y. Some sets also have small driver chips embedded into the plasma panel ribbon cables. If those go bad (possibly your problem, then the set is a throwaway.
you can also try reseating the ribbon cables on the boards.
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