panasonic viera lcd tx55as802b

[Dave b]

hi everyone my television(2 years old) will not switch on, it powers up then just switches off, the power/standby light flashes once every 3-4 seconds I have taken it to a repair shop and have been told that the screen is the problem and it can't be fixed does anyone know if that's right hopefully someone on this site can help.

[ReeceyBurger123]

Re: panasonic viera lcd tx55as802b

Absolutely no help to us at all. Firstly how many Led flashes and red or green ? Images lf the set ? Voltages tested ?

[Dave b]

Re: panasonic viera lcd tx55as802b

(sorry I'm a new to this)the television is 2 years old and just would not switch on, I tried several times using the power button on the side the led light would flash green the picture would come on for about a second then switch off the led light blinks red once every 3 seconds the television is in a repair shop they phoned me today and just told me it was the screen and it cant be replaced.

[sordids999]

Re: panasonic viera lcd tx55as802b

Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem

just a tip my friend

[Dave b]

Re: panasonic viera lcd tx55as802b

its in the repair shop sordids999,have been searching the internet trying to find out what the blink codes mean and if it is the screen when I found this website.

[ReeceyBurger123]

Re: panasonic viera lcd tx55as802b

Lol wasn't intended to be snappy, that repair shop sounds like a load of crap doubt it the screen but not ruling it out you need to get it back and we can help you diagnose it.

[vinceroger69]

Re: panasonic viera lcd tx55as802b

As you say the screen does flash for a second maybe a failed led? maybe the tv repair shop dosnt want to repair it hence saying its the panel. If i was you get the tv back home and take some good pictures of the boards in the set then we can try to offer help.

[Moreno83]

Re: panasonic viera lcd tx55as802b

I agree with Reece.

I would not be surprised if they told you this:

"Tv can't be repaired because the panel failed , but we are willing to buy it from you for $50"

The panasonic tv is detecting a error. Provide some pictures and buy a cheap multimeter. You can use the paperclip option in advanced mode.

[Dave b]

Re: panasonic viera lcd tx55as802b

No worries a bit of banter is healthy,I don't have a clue about electronics so any help is appreciated and I certainly don't want to be conned by a repair company that's only interested in getting the set for parts.

[Dave b]

Re: panasonic viera lcd tx55as802b

I have a cheap multi meter that I used for tracing wires in my shogun but wouldn't know where to start in a television, I got a shock from the back of a television years ago from the bit that's like a suction cup.

[Moreno83]

Re: panasonic viera lcd tx55as802b

You need to lay the lcd side of the tv down on a tablecloth so you can easily remove the backcover.

With the backcover removed you need to take some clear pictures of the boards so we can see how they are connected.
When did the fault occur?

[Dave b]

Re: panasonic viera lcd tx55as802b

it happened Saturday took it into the repair shop Monday they phoned today saying its the screen?? still cant find out what the one blink code means on the LCD tv.

[vinceroger69]

Re: panasonic viera lcd tx55as802b

some tvs dont use blink codes.

There are panasonic lcd technical guides online the latest i have saw is 2012 version

on some panasonic lcds 1 blink means inverter error but your sets so new so may be a diffrent meaning

[Dave b]

Re: panasonic viera lcd tx55as802b

I thought that Panasonic televisions had them to identify where the problem stems from, can find the blink codes for plasma but not LCD ,for plasma 1 blink means STV 5v sense DG Board I don't know what it means its all a bit confusing.

[Moreno83]

Re: panasonic viera lcd tx55as802b

Try this and see if it works:

LCD Panel Test Mode

Purpose:

To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.

How to Enter:

While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times.

How to Exit:

Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

How to confirm:

If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.
And then, judge by the following method.
Still abnormal picture is displayed: The cause must be in LCD Panel.
Normal picture is displayed: The cause must be in A board.

Remarks:

The test pattern is created by the circuit in LCD Panel.
In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.
If the normal picture is displayed, LCD Panel must be okay and the cause of failure must be in A board.

[Moreno83]

Re: panasonic viera lcd tx55as802b

1 blink for led models is :

checkpoint 1) A board ( mainboard with hdmi )
checkpoint 2) Powerboard
checkpoint 3) Panel

[Dave b]

Re: panasonic viera lcd tx55as802b



HI here is the pictures of the power board from the television does anyone know what parts to check and can you please explain how to do this.

[vinceroger69]

Re: panasonic viera lcd tx55as802b

have you tried whats mentioned in post 15 first?

[Dave b]

Re: panasonic viera lcd tx55as802b

yeah vinceroger69 the tv will not switch on just shuts down been trying the sequence in post 15 and nothing.

[Moreno83]

Re: panasonic viera lcd tx55as802b

Sorry my bad. Mixed up the service manuals!


1 blink for this model is "BL SOS"

It doesnt cover the fault in the service manual but i guess it's "backlight on" problem. This will be the LEDS or a problem on the powersupply. My guess it's the LED that have failed.

There is no need to test the LCD test option because the tv wont turn on at all. Its only if you see a abnormal picture.