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Repair guides and support for Panasonic's Viera line of televisions.

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Why does my Panasonic LCD TV turn itself off after 2 seconds

My Panasonic Viera tv keeps switching itself off after a couple of seconds.

The model type is TX-58AX802B. I have tried unplugging it and holding the on button as suggested on other answers but with no success. Can anyone help?

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@bone1 whenb you say turn off do you mean it shuts off like a no power situation? Besides the reset with the power button, what have you checked?

Hi .. i have a panasonic led 50inches Tv. When it is switches on i will have on off image fir about 10seconds..and then the green led will blinking rapidly and turned off with steady red led. anybody have any idea?

Thank you..

I have the same problem.. can anyone please answer this.

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@bone1 it does sounds like a power board issue. You do want to remove the back of your TV set and take a look at the board. Check for leaking and/or domed looking caps or anything unusual. Post some images of your boards with your question. Use this guide for that. It will allow us to see what you see.

Before anything else, please double check the warranty status on this set. It is really not that old and may still be covered.

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If it is this, can it be fixed or do you need a new board? I have the same issue

@noideawithtech either repaired or replaced. It will depend on what exactly has failed. If you let us know the exact make and model of your TV and what the issues are with it, we may have a better answer for you.

TX-55AS740B. Hi my Panasonic tv stays on for 1 second and switches off. Can any one help why.

I have the same problem the make of the TV is TC-50S2 Panasonic can anyone help out on this issue I am gonna blow the fans and back of the TV to see if dust jammed the fans and that's why it's shutting itself off and wait to see if someone else has a suggestion or a fix ! Thank you for any reply's to this fix.

@Jose Arellano have you cleaned the fans yet? what are the results?

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I had the same problem and fixed it. In my case my older TV had dust stuck in the fans. I disconnected the TV, took it down from the wall, placed it face down. Instead of unscrewing the many many screws (some of which were stripped), I took a hair dryer and blew air on the top vents with the fans below. Dust and dirt blew out. I did this for 3 minutes/fan until no more dust came out. The replaced the TV on the wall, reattached cables and voila it works and does not shut itself off

Richard

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Yes thanks Richard, I just followed your instructions with the hair dryer on cold. It works again and does not turn itself off. All fixed. Fantastic

Gav

My 42 inch Panasonic shuts off after being on from an hour or the whole day. When it's off I can only turn it in at the TV, hold the button down either for a few minutes or seconds. Depends, and it'll come back on. Do you have any idea? Appreciate! Peace!

Richard you are my hero. Took it to my workshop and blasted out with compressor and so far works just as did before. Was inch away from buying replacement . Cannot thank you enough for advice makes me wonder how many tv chucked away and how much money wasted on rip off ‘repairs’ due to this . Thanks again

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Hi Michell Cuellar ,

The best way to tell if it is OK or not is with the power disconnected and then to connect an Ohmmeter across the fuse and measure its' resistance. It should measure 0.00 (zero) Ohms i.e. short circuit

It is a slow blow fuse that is designed not to blow when the power is first connected to the TV and that is just the type of case that it is in.

Your particular fuse shows T5AH 250V The T indicates "Timed" (aka slow blow) which means that it can withstand the inrush current when the power is first connected.

The inrush current which only lasts for a few milliseconds if that, is higher than the fuse rating but because the fuse is a slow blow it won't rupture immediately but holds long enough until the current has subsided to what the normal value is. A standard fuse would blow immediately that the power was connected. If you need a replacement fuse check the end caps of the new fuse as its’ rating is stamped there, including the T

High inrush current can occur because capacitors in the circuit may have little or no charge left in them and offer less reactance to the voltage applied therefore initially higher current flows. Once the capacitors start charging the current decreases. As I said this all occurs in a few milliseconds

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Block Image

Does the fuse on board sopose to be white instead of clear?

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I had the same issue with a smaller Panasonic TV and was able to solve the problem. I unplugged the TV and removed the back by unscrewing the screws that held it in place. The problem was with age, dust had accumulated in and near the fan. I used a hair dryer to blow air which sent the dust flying away. I did not have to come in contact with the fan. I then replaced the back and the TV worked as it should.

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See Richard Wolf answer above. So simple. Worked for me. Can’t praise him enough.

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