Question about Televison & Video
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Posted on Jan 02, 2017
SOURCE: 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.
Posted on May 10, 2008
Commonly it's going to be a power supply related problem. The two boards that need to be looked at is the Main Power Supply Board or the power supply board for the screen. The one that powers the screen, some manufactures call it a Backlight Inverter Board.
If you have some electronic experience, you can sometimes find a Service Manual for the TV over the internet for less than $20. It will have the all resource material for repairing your TV model. It's just the matter of replacing the bad part on the circuit board.
Posted on Aug 12, 2009
I had this problem in 2007 / 2008 here is what happened to me.
Jan 09, 2008 - I also have brought the unit to the authorized Panasonic repair facility and the problem is a failure in the P-board which is the power supply board. The P-board needs to be replaced. The repair will cost $475 plus tax. $250 is for labor. The unit was nop more than two months out of warranty. This does not speak well for Panasonic. I have been researching the problem and it looks like this has happened to many of the Panasonic plasma TVs.
Jun 14, 2008 - As an update to my problem with the failed P board. Contacted Panasonic Service and talked to a customer service representative. I told them how I have purchased many Panasonic products and how unhappy I was with the failure of the product. They proposed paying the labor cost of $250 and I would pay for the part. I just hope it does not happen again.
Posted on Oct 14, 2009
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