Panasonic TH-42PZ80BA. 10 blinks

[Fleckers tv]

Hi peeps. Couldn't find a thread for this but if there is one please link. I don't usually repair these but I got this one under misleading circumstances, don't get me wrong I love pannys but find them a pig to work on, but with some help , I should get this one running again.

Only getting 4.9v during blinks from power supply, if I disconnect Left buffer Y us. I still get 10 blinks. If I disconnect X main (right buffer ) I get nothing , as us usual Google is awash with confusing info saying it could be any board, can't find any shorts on the buffer boards so, can you help

[Alastair E]

Re: Panasonic TH-42PZ80BA. 10 blinks

SMPS Transformer fuse OK....?

[ReeceyBurger123]

Re: Panasonic TH-42PZ80BA. 10 blinks

You dont like to work on them. So you dont like a challenge then ? Or to be able to fix an awesome Tv ? There are two smd caps on the controller boards that tend to fail will link repair kit.

[Fleckers tv]

Re: Panasonic TH-42PZ80BA. 10 blinks

I love a challenge, but these buggers weigh a ton, and I have 2 still to repair both with 7 flash error codes, one needs a main board which I can't find and one needs a ysus which is on the way, I think these tvs were among the bes=t quality made, I have several, but I have not got great Plasma experience

[Fleckers tv]

Re: Panasonic TH-42PZ80BA. 10 blinks

SMPS Transformer fuse OK....?

yes all board fuses are fine, thank you for replying guys, keep it up, there are all the boards for this on ebay, buts that is cheating

[vinceroger69]

Re: Panasonic TH-42PZ80BA. 10 blinks

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

[Fleckers tv]

Re: Panasonic TH-42PZ80BA. 10 blinks

This Diode D054 is reading as shorted , on the PCb
Could this be the lone culprit

[ReeceyBurger123]

Re: Panasonic TH-42PZ80BA. 10 blinks

Thats a snubber diode for the tarfo it should show shorted.

[syaoran123]

Re: Panasonic TH-42PZ80BA. 10 blinks

There are 2 chips on the power supply which look like mini circuit boards labelled mc201 and mc301. Use electronic freeze spray to cool them down, then power it up to see if it works. It may or may not work using this test method.

Of course vinceroger69 has posted a very good link on how to rework these chips. And instead of SMD capacitors, you can use the aluminium through hole capacitor kind.

Hope this helps

[vinceroger69]

Re: Panasonic TH-42PZ80BA. 10 blinks

post 2 alastair means this fuse i think
https://www.youtube.com/watch?v=LjpGKaBt8hg

[Fleckers tv]

Re: Panasonic TH-42PZ80BA. 10 blinks

Yes I have seen that video before, I have tried freezing the ic's 201 and 301, but no change, in fact its stopped the relay clicking now, but still flashing green with the 10 blinks shortly after. shame , I was getting excited then,

Thanks guys, any other tips please share, I am determined to get this up and running for my Birthday, which is tomorrow,

How sure do we think its the powerboard, isn't there a way of getting this set to come up with the white rasta to test the powerboard ??

[vinceroger69]

Re: Panasonic TH-42PZ80BA. 10 blinks

Yes I have seen that video before, I have tried freezing the ic's 201 and 301, but no change, in fact its stopped the relay clicking now, but still flashing green with the 10 blinks shortly after. shame , I was getting excited then,

Thanks guys, any other tips please share, I am determined to get this up and running for my Birthday, which is tomorrow,

How sure do we think its the powerboard, isn't there a way of getting this set to come up with the white rasta to test the powerboard ??

did you freeze the ics? when i repaired my set i froze just the two very small smd caps as shown in my first video and the set came on so i just replaced the capacitors it maybe worth still swopping the two capacitors though on your set to rule them out.Does your set have that thermal fuse like in my second video link did it test ok?

[Fleckers tv]

Re: Panasonic TH-42PZ80BA. 10 blinks

Hi Vinceroger, both your links are for the same vid, did not notice the caps one, would love to try that next...

thank you

[vinceroger69]

Re: Panasonic TH-42PZ80BA. 10 blinks

https://www.youtube.com/watch?v=mBw8...&nohtml5=False

have you checked this?

and in the other video 11.00 minutes the 1uf capacitors hes removed/changing freeze them and see if the set starts

[ReeceyBurger123]

Re: Panasonic TH-42PZ80BA. 10 blinks

Try freezing them Ics and the 1uf ceramic caps for them also check the thermal fuse that can fail too causing non intermittent 10 blinks. Also like the lighting set up haha