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Plasma TV 50pf7320a

The plasma TV has audio but no video (no light on the screen)

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There are several things that can cause it. You are best to have an expert technician come in and take some test on it in order to determine if it is from vertical blanking failure or something else. It is not easy to fix this yourself, if you have no experience, because there are a lot of parts that have to be removed before you can reach the components. It could be as simple as a loose connector ribbon or a bust capacitor, but it could also be more complicated. Hence, in my honest opinion, better get a qualified technician.

Hope that helps!

If your issue is not resolved, please do not assign a rating just yet. Please post back as to what steps you took, results, etc, and I will try to assist you further as best I can. I am here at your service.

P.S. -You can rate this solution with one of four votes, if you feel your issue is resolved (remember that at times a bit of to and fro dialogue may be necessary to resolve an issue).

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IrishDruid

Posted on May 05, 2008

  • Swilin Sampson
    Swilin Sampson May 31, 2008

    Hello,





    This thread has gone 14 days or more without a response.
    Please close the thread with a “FixYa” or “Helpful” rating.





    Or post back with latest developments, what steps you took,
    etc. and I will assist you further as best I can.





    Thank you.


    IrishDruid




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Plasma tv


Ok first i have to ask when u turn sound off on TV and get close to the TV does it make a buzzing noise ? If so u have a damaged Plasma panel .
If this is not the problem you could have a bad logic or y-main (most common problem) will need to perform a white screen test on the plasma panel to verify this is the problem.
This is what u need to do
1. Remove the back panel of the TV.
2. Remove the Small Signal Board bracket ( the two long bars on back of the plasma panel, the bracket that is connecting the two with SSB on it, remove this and disconnect the connectors to the power supply (CN1M02,CN1M03, CN1M45)except for the main power plug in you will still need this)
3. Once u remove the SSB bracket you should see a plasma panel resembling pic 1.
4. Place a jumper wire or connect the two pins (CN 2012) on the logic board located underneath the SSB bracket.
5. Also place jumpers on the power supply (J8003 and J8004)
6. Now plug in the power supply, U should hear the relays click and after 5-10 sec you should see a green led on power supply, and 2 green leds on logic board 1 will be solid and 1 will flash.
With this set up you should get a white screen on your TV this will let you know if the panel is bad or not.
Also forgot to ask have u had this TV worked on recently or this just happen for no reason.

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