Panasonic TH-42PZ8E Blinking 10 times

[Moreno83]

Hi ,

I got a TH-42PZ8E plasma , bought it with the symptom that it was blinking 6 times.
When i got home and plugged it in i got 10 blinks.
Removed the back of the tv and found a HUGE amount of dust , some capacitors were not even visible haha! Removed all the dust but it does not change the blinking pattern.
The fans are not spinning and the led's on the SC/SS board are off.

Service manual says its the A board?

The power board model nr : ETX2MM702MF
All caps look fine! Removing the SC20 cable does not change the blinking pattern.


Any idea what to do now? Where to measure?

[tw2005]

Re: Panasonic TH-42PZ8E Blinking 10 times

search MC201,MC301 modules. Could be the common 1uf 50v ceramic cap on those. If you have freeze spray or invert can of air and trying chilling those and then turn on Tv and see if it fires. Theres a good video by Norcal715

https://www.youtube.com/watch?v=LjpGKaBt8hg

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Thx , will try that right now! Is it ok to spray the whole print? ( The small 301/201 )

I did it with iPhones but this is different haha

[tw2005]

Re: Panasonic TH-42PZ8E Blinking 10 times

Have a look at the video first, I've never tried it but I have had 2 blink and just replaced the cap. I think also there's another 10 blink issue, maybe thermal fuse in a transformer but I think the other guys will probably have more info on that.

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Ill try replacing the cap first because i don't have that IC

[tom66]

Re: Panasonic TH-42PZ8E Blinking 10 times

I've done 7 or 8 of these (lost count...) and all of them it was just the cap that needed replacement.

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

I replaced just the caps! I used normal capacitors ( 1uf/100v + 1uf/50v ).
Red light stayed on and i used the remote to turn it on….

Green led was blinking , screen came on and went from no signal to white snow and then it turned off with a blinking red light ( 11 times ).

Did i do something wrong?

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

When i turn it off and back on the led goes green , shows picture for 1 sec and turns off……

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Ok , I found the problem! Didn't connect all the fans haha! Another lesson learned guys!!!

May i thank you with a digital beer?

[tom66]

Re: Panasonic TH-42PZ8E Blinking 10 times

Good to hear, another one saved from the dump.
I made the same mistake before. The fans should start spinning before the panel lights up.

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Got a question though.

The tv was FULL with dust , it was so much dust that i only saw the cooling of the SC board , rest was "gone".
Is it wise to remove the front cover and clean between the glass and the plasma screen? To make it as good as new….

[tom66]

Re: Panasonic TH-42PZ8E Blinking 10 times

Don't think so, unless there is dust under there, it's a difficult job to do.

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Ok then i will leave it as it is …..
I did it with the 9944 from philips , was pretty easy but i have never done it with panasonic.

[Alastair E]

Re: Panasonic TH-42PZ8E Blinking 10 times

Best way to tell if the glass and panel need cleaning is have some text on the screen--say film titles on black background, then look at the screen at an angle...

If there's a nice light halo round the text--the glass has smut/dust/smoke-stains and needs cleaning.

Big PITA to do with all the stuff that needs to come out/off to remove the panel, I did a PX70 recently, took me about an hour to do, and there's always the risk of panel damage Or the much bigger risk of a piece of dust settling between the panel and glass during re-assembly!

IF you do go ahead, Use a good quality glass-cleaner--But Do NOT spray onto the panel, Spray lightly on a fresh clean cloth and use that, Same for the inside of the 'implosion' glass.....

[Moreno83]

Re: Panasonic TH-42PZ8E Blinking 10 times

Thxx a lot!!

[tw2005]

Re: Panasonic TH-42PZ8E Blinking 10 times

Ok , I found the problem! Didn't connect all the fans haha! Another lesson learned guys!!!

May i thank you with a digital beer?

Funny, joining too late but yeah 11 blink is fans, gotta be the easiest and cheapest repairs. I have a lovely 46pz800 I got for free and did just the cap

Nice!

[tw2005]

Re: Panasonic TH-42PZ8E Blinking 10 times

Best way to tell if the glass and panel need cleaning is have some text on the screen--say film titles on black background, then look at the screen at an angle...

If there's a nice light halo round the text--the glass has smut/dust/smoke-stains and needs cleaning.

Big PITA to do with all the stuff that needs to come out/off to remove the panel, I did a PX70 recently, took me about an hour to do, and there's always the risk of panel damage Or the much bigger risk of a piece of dust settling between the panel and glass during re-assembly!

IF you do go ahead, Use a good quality glass-cleaner--But Do NOT spray onto the panel, Spray lightly on a fresh clean cloth and use that, Same for the inside of the 'implosion' glass.....

I learnt the hard way, the glass has an anti glare coating and I tried polishing a scratch horrified when I went through the coating, not good,

Even a moist cloth and paper towel can help, I use a mild glass cleaner.