Question about Panasonic 50 in. Plasma TV
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Posted on Jan 02, 2017
SOURCE: Picture and sound go off
The TV might be telling you that there's something wrong with the power (wrong or excessive voltage, for instance). Please test the TV at someone else's house to rule out electricity problems at your house. If the TV still shuts off, then there should be something wrong with its logic board or power circuits, and you should call a technician to inspect it.
Posted on Mar 02, 2011
The issue you describe is consistent with a power supply board issue. This is the board where the AC goes to. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.
The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on.
All these can be checked on the power supply board.
But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.
Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.
If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.
Posted on Sep 24, 2011
With Panasonic Plasma TV, 10 blinks swill never occur. It shoud be either 9 or 11. Count it once more. Visit the site named 'Electro-help' for more details. Click this link. View it in Timeslide or Flipcard option, which can be selected from the drop down box menu by the Sidebar tag, at the top left corner of the display window. You can also click the Home tab to see the latest updates. It will make search easier. There are more than 1400 posts to different brand TVs till now. Setup proceedings and code list to different brand remote controls also included. Pull up older posts or do a search by type in the Brand Name of your device in the Search Box, at the top right of the display window.
Posted on Dec 14, 2012
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