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Plasma TV issues

 
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jbltecnicspro




Joined: 23 Apr 2016
Posts: 509



PostLink    Posted: Wed Aug 04, 2021 4:35 pm    Post subject: Plasma TV issues Reply with quote


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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: 24101
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Wed Aug 04, 2021 9:46 pm    Post subject: Reply with quote

Bad panel or driver board. Generally, a bad panel.
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jbltecnicspro




Joined: 23 Apr 2016
Posts: 509



PostLink    Posted: Wed Aug 04, 2021 10:13 pm    Post subject: Reply with quote

Curt Palme wrote:
Bad panel or driver board. Generally, a bad panel.


Could you expand on this? Iím only really versed in the workings of CRTís. Guess Iím a dinosaur. Smile. Whatís going bad on the panel?
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AnalogRocks
Forum Moderator



Joined: 08 Mar 2006
Posts: 26230
Location: Toronto, Ontario, Canada

TV/Projector: Sony 1252Q, AMPRO 4000G


PostLink    Posted: Mon Aug 09, 2021 2:45 pm    Post subject: Reply with quote

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: 24101
Location: Langley, BC

TV/Projector: All of them!


PostLink    Posted: Mon Aug 09, 2021 6:38 pm    Post subject: Reply with quote

jbltecnicspro wrote:
Curt Palme wrote:
Bad panel or driver board. Generally, a bad panel.


Could you expand on this? Iím only really versed in the workings of CRTís. Guess Iím a dinosaur. Smile. Whatís 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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