Question about Panasonic TH-42PX75U 42 in. Plasma Television

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Panasonic TH-42PX75U won't turn on

I have a 42 inch panasonic plasma TV that won't turn on. The power light does not blink at all. It seems completely dead. my DVD is plugged in to the same power strip and works fine, so I know it's not a breaker on my end. Several weeks ago I took it to a repair shop. After sitting in his shop for two weeks, he called and said he just plugged it in and it worked fine. I brought it home and plugged it in and it's worked fine for about a week. This morning, same old problem again. It's completely dead, no blinking red light. I unplugged and let it sit all day. I plugged it in tonight and still nothing. Any suggestions on what may be wrong??

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  • weba96 Mar 18, 2009

    We had the same thing happen; we took to a repair shop and they "diagnosed" the TV with a malfunctioning control panel secondary to a power surge...we are doubting the diagnosis, b/c no other electronic that is plugged into same outlet had a problem...not sure what is going on. We are planning on going to another repair shop

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SOURCE: panasonic TH-42PX75U won't turn on

Your powerboard is damaged, and need to be replaced.

Sometimes it appear the TV is working again with no problem but it is only a matter of time for the board to get completely damaged.

Posted on May 30, 2009

SOURCE: My Panasonic TH-42PX75U 42 in. Plasma Television

this looks like a defective sc board with or without buffers repaire cost about 400 dollars

Posted on May 31, 2010

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is the set making a clicking noise?
is the power light flashing on the front?
or no power light at all just dead?
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2 Answers

Panasonic TH-42PX75U won't turn on


Your powerboard is damaged, and need to be replaced.

Sometimes it appear the TV is working again with no problem but it is only a matter of time for the board to get completely damaged.

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1 Answer

Wont come on


Take out the SU board and try to start the unit. If it works, order that board.
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Boards are (rearview) on the left side SU is up and SD is down.
Good luck

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