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Panasonic Model TH-42PZ80U does not have any light on screen or sound. Power iindicator lights steady for 5 sec then flashes twice in 5 sec and repeats

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2 times blink light is an error code that indicates problem in D board that is missing 15V supply from power board.
D board location is marked in below image taken from related service manual and shows boards location in tv, it is located under A board that has tuner and inputs.
Check 15V supply in D board and if 15V is missing, check P (power) board for 15V line.
Hope these info will help you.
CAUTION: above info is useful if you are handy with electronics stuff repair and have prior experience of working with tv circuit board. Do not take risk and call local tv repairman if you feel uncomfortable working in tv.

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Posted on Dec 29, 2010


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I have a Panasonic TH-50PE700U

I think if you Google research the model with "10 blinks" you will likely find it is bad power supply or related to it.

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I have a Panasonic plasma hdtv. When I try to power on, usually I just get the red light to flash--continually. Sometimes I can keep pushing the button and the tv will power on, but usually just the...

Hi that sounds like your power supply is defective. The flashing light is actually a code that you can look up in the service manual. Depending on the number of times it flashes. If yo are going to order the part yourself you have to actually get the part number from the actual part. Don't order it just by the model number of the TV because manufactures make a few different versions of the same model TV.

You can get parts at

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I have a Panasonic Viera TH-42PZ77U, when I try to power it up it wll click as if it was going start and about 2 sec. later it ckicks again and the red light by the power switch flashes

Something inside has failed.
The flashing is a code for the repair engineer to tell him/her what is wrong.


Please dont forget to vote if you liked my answer



Feb 09, 2011 | Panasonic Viera TH-42PZ80U Plasma TV

1 Answer

Have PT50LC13 that will not light up when power button is turned on. The power button just blinks orange 5 times consecutively with a 2 second delay between intervals.


The light flashes 5 times consecutively with a 2 second delay becuase it denotes there is some internal problem in the TV.So please consult your near by service centre.They will come and fix the problem.You cannot do anything .


Jul 23, 2010 | Panasonic Viera TH-42PZ80U Plasma TV

1 Answer

My panasonic television's power light is flashing. Model TH-42PZ8OU The television won't respond to controlers or power button. Please help

Power supply or main board would cause this problem. You will need to check the caps on the power supply and test the voltages. If power supply is good replace the main board.

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3 Answers

TH-42PZ80U Panasonic Plasma, red light flashes 10 times

Panasonic said "A" board,
A board SOS Detect (Explanation)
10 Blinks SOS: The voltage regulators IC5400 and IC5401 in the A board generate SUB9V and SUB5V. The 9V and 5V from these ICs are monitored by IC1100. Any abnormality on the SUB9V or SUB5V lines, triggers the shutdown circuit and the MPU shuts down the unit. The power LED blinks 10 times.

But need to measure the connection SC2, if it short, it will be the SC board.

The knowledge obtain from: Real case of repair by myself.
Information from Panasonic training manual.

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Plasma panasonic headache

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