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I have a Panasonic plasma TV, model TH-42PD25 I have the…

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I have a Panasonic...

I have a Panasonic plasma TV, model TH-42PD25 Hello. I have the same model (Panasonic TH-42PD25). I was reading your article but in my case when I turned On the TV, the speaker are doing some noise and the image looks like snow for about 3 seconds, after this the front LED blinks 7 times, stop and repeat. I can hear some cracking noise coming from the back. After removing the back panel, I found the LDS for the SC board not light at all, for the SS just red for 2 seconds, and for the board (triangle) with a fan inside 2 seconds too. meanwhile 7 blinks in the front. Thank you.

Technician's Assistant: Thanks. Can you give me any more details about your issue?

Sure

Submitted: 2 years ago.Category: TV
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Answered in 7 hours by:
1/23/2016
TV Technician: Pete, Electronic Engineer replied 2 years ago
Pete
Pete, Electronic Engineer
Category: TV
Satisfied Customers: 19,961
Experience: Over 16 years of experience installing and repairing electronics.
Verified

Hi Juan,

A 7 blink error code on the TH-42PD25 indicates a fault with the power supply (P) board. It is not outputting the correct voltage to keep the TV turned on, and it will need to be replaced.

You can get a replacement power supply board from http://www.shopjimmy.com/panasonic-tnpa2841ah-p-board.htm

Let me know if you have any additional questions - you can ask followup questions at no additional charge after rating my service today.

Thanks,

Pete.

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TV Technician: Pete, Electronic Engineer replied 2 years ago

Kindly take a moment to rate my service; you can still ask additional followup questions at no additional charge :)

Pete.

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Customer reply replied 2 years ago
Hello Pete. I changed the part that you mentioned TH-42PD25 and also the SC board and nothing changed. I tested the New "P" board with the old and new SC board and the 7 blink red code appear. Any ideas?
TV Technician: Pete, Electronic Engineer replied 2 years ago

Hi Juan,

Do you have a voltmeter available to take some test readings?

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Customer reply replied 2 years ago
No problem I can take some readings.
TV Technician: Pete, Electronic Engineer replied 2 years ago

Ok, can you start with the P board and look for the voltage outputs on it - they should be indicated on the board.

Let me know what they measure...

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Customer reply replied 2 years ago
OK. Tomorrow I'll contact you with the readings. It's Ok for you?
TY.
TV Technician: Pete, Electronic Engineer replied 2 years ago

Yes, tomorrow is fine!

Thanks, Pete.

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Satisfied Customers: 19,961
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