TC-P45X5 Plasma Has Taken Up Smoking

[Michale32086]

Must be a bad month for me and Panasonics... I have a 42" that has taken up smoking.

You plug it in and the marked part starts smoking like a chimney...

The old me would have just replaced the board and be done with it.

The new me wants to learn to fix and save $60 in the process..

Any help would be appreciated...

EDIT Mistake on SUBJECT.. It's a TC-P42X5... My bust...

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Reading some of the other experiences with this particular model, I am glad I opted to try and fix the board rather than pay for a new one...

[tom66]

Re: TC-P45X5 Plasma Has Taken Up Smoking

It is comprehensively Panasonic's worst model ever. They completely abandoned their previously high quality standards and produced these pieces of turd. 42" and 50" included.

I have the same power board here so can read off that component for you if you need.

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

It is comprehensively Panasonic's worst model ever. They completely abandoned their previously high quality standards and produced these pieces of turd. 42" and 50" included.

I have the same power board here so can read off that component for you if you need.

That would be great.. Do ya think just the part went bad?? Or merely a symptom of something worse???

Thanx for the reply...

[Alastair E]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Thats a ceramic cap--prob several hundred puf, rated prob at a 1KV or so.....

Check that transistor on the heatsink for issues, but its probably just the cap...

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Thanx Alastair.. I'll check that out..

Much appreciated...

[tom66]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Capacitor on mine is 221K = 220pF

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Awesome.. Thanx, Tom.. I'll see if I can scavenge one up...

[tom66]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Forgot to mention it's 1kV rated.

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Well, I found a 221K Cap.. Put it in..

The good news is, it's not smoking..

The bad news is, it does nothing. Power light comes on RED, I hear a relay click and that's it.. absolutely nothing gets to the screen...

So, I am thinking there is more damage to the board...

Is there a +/- on that cap???

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Slight correction. The first time I plugged it in there was a relay click.. Now there isn't.. There is just the power light comes on RED when I push the POWER button.. Both on the remote and on the unit...

[tom66]

Re: TC-P45X5 Plasma Has Taken Up Smoking

No polarity but probably more faults. What is the voltage across the 450V capacitor?

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

Not sure if it's relevant, but I am working outside and it's about 50 degrees....

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

ACK!! Late in picking up the wife.. I am taking the Panny home with me.. Be back on in about an hour...

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

OK, back on this... I inspected the area a little more closely and discovered some more charred spots...

I cleaned that off and it appears that it was just residue from the capacitor, not any burned or damaged component...

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

No polarity but probably more faults. What is the voltage across the 450V capacitor?

Just so I make sure I am doing this right...

At those points with the meter set for DC...

Sorry to be so anal, but I want to make sure I am doing this right..

Also, as an aside..

From experience it appears that the biggest danger in working on Plasmas is not the voltage...

It's the frakin' sharp edges of the metal cases!! I musta dropped a quart of blood so far....

[tom66]

Re: TC-P45X5 Plasma Has Taken Up Smoking

I wonder if that inductor is failed. Check it doesn't have open windings on its two pairs of windings (will be obvious on the bottom of the board - if unsure post a picture)

[tw2005]

Re: TC-P45X5 Plasma Has Taken Up Smoking

I hope this helps. Info on these later models is near impossible to find. Since 2011 the manuals have been made impossible to enlarge in any detail for the schematics, 2012 models , you're flat out getting any info on the PSU.

i was looking at the 2012 guide for the Ut/ST50 but thay have a separate PSU as opposed to your PSS(P + SS)

On the ST50 it suggests for shorted Vda

No SOS. The TV stays on with black screen.

For the 2011 , shorted Vsus,Vda - locked solid LED

I have attached the manufacturers schematic for this PSS, it's 50" but is still a B159-201 series board

[tw2005]

Re: TC-P45X5 Plasma Has Taken Up Smoking

By the way, that Cap is shown as 2Kv

[Michale32086]

Re: TC-P45X5 Plasma Has Taken Up Smoking

I hope this helps. Info on these later models is near impossible to find. Since 2011 the manuals have been made impossible to enlarge in any detail for the schematics, 2012 models , you're flat out getting any info on the PSU.

i was looking at the 2012 guide for the Ut/ST50 but thay have a separate PSU as opposed to your PSS(P + SS)

On the ST50 it suggests for shorted Vda

No SOS. The TV stays on with black screen.

For the 2011 , shorted Vsus,Vda - locked solid LED

I have attached the manufacturers schematic for this PSS, it's 50" but is still a B159-201 series board

Awesome!! Thanx for that TW...

Here is a pic of the cap I put in...

Tom,

Not sure what you mean by windings, but here is a pic top and bottom of the (what I think is) the inductor...