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**newtothis** · 04-10-2015, 02:09 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Either way are you going to get the set back?

**Alastair E** · 04-10-2015, 02:27 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

How do you Know the PSU is faulty? Have you Tested it?

Whats the symptoms and whats the fault-code (LED Blinks) telling you?

10-1, being a Panasonic, I'll bet the PSU is just fine and that the SC board IGBT's are stuffed!

Capacitors are seldom a problem with Panasonics--They Used to use Good Quality ones, Rubycon, Nichicon, United, etc--Not so anymore, they've gone over to using 'Aisin' crap now!

**jetadm123** · 04-10-2015, 02:40 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

If I understand your request correctly, the shop says it's a cap problem and doesn't know what caps to order? What kind of repair shop is this?! And why are you involved? Are you trying to find the cap values, order them and turn them over to the shop to install? Man, do your friend and yourself a favor and get that TV back ASAP because it sounds like they don't have a clue. Agree with Alastair E that it's more likely something other than caps, but no can help until you get that TV back, give the exact symptoms and perform some testing.

**stj** · 04-10-2015, 02:47 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

i would say the "shop" is full of it for one of 3 reasons.

1: they cant find the actual fault.
2: they f*****d the tv and cant admit it.
3: they used a panel from it to fix another set.

**tad_scsi** · 04-10-2015, 02:54 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Thanks for the replies thus far.

The gentleman who owns the set is 78 years old.

When I had last looked at the set, I had the essential Panasonic Service Manual in hand and the troubleshooting tree indicated power board failure.

The TV had been subjected to irregular power for sometime (about 3 years), I discovered that it had not been grounded at all, though the receptacle appeared to be 3 prong, there was no ground connected within it. The whole house had also recently suffered an open-neutral event which damaged quite a few devices.

The shop that has the unit (about 70 miles from here) had tested the caps and reported they were failed. I suspect, that since their specialty is high-end audio and that they TOLD the gentleman (I wasn't with him - it never would have gone there) that they don't savor working on TVs, likely owing to bench space, and I'm told, a smallish shop.

My guess is that when they found no complete boards available after determining the caps were bad, and having limited bench space, they just pushed the unit to the back. They've had it since September.

Given his age and attitude, It is tough to get him to go reclaim the TV without some assurance that it can be repaired as he doesn't relish long road trips anymore.

The behavior of the TV before it died very MUCH suggested power problems, I have 45+ years in electronics and a range of industrial controls, of many types (including fluid power, etc) I thought it pretty obvious that power was at the root, and as noted the Panasonic guide also indicates it.

An ungrounded circuit which (it later turned out) was also reversed polarity, is hell on power caps.

I have replaced the wiring from breaker to his entertainment center and installed APC voltage regulators. In his other entertainment center, some moron that was helping him out also used a 'surge suppressor' with its ground prong removed, even though THAT circuit was well grounded. The open-neutral event handily destroyed about $900 in connected electronics there.

If I had the unit here, I'd be able to visually ID the caps.

He does want the TV badly, and nearly spent about 1700 a few weeks ago to replace it with a new one - he's that averse to friction with others. I told him I'd go in and reclaim the TV for him, if I have to. He really would prefer to not buy a new TV. He really did like and talked up his Panasonic

**Alastair E** · 04-10-2015, 02:58 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Originally posted by stj View Post

i would say the "shop" is full of shit for one of 3 reasons.

1: they cant find the actual fault.
2: they fucked the tv and cant admit it.
3: they used a panel from it to fix another set.

Yup Sounds about right.

Most so-called, TV Repair places these days Do NOT have a Proper Technician, only some (probably part-time) botcher who changes boards, and cant diagnose and repair to component-level.

It REALLY wouldnt surprise me if they've used parts out of your set--to fix others, Happens all the time, and you'll end up with a set of boards--with loads of Other faults--as well as your original issue!

Defo sounds like this Fred-Karna's outfit you took the set to is like that!

**tad_scsi** · 04-10-2015, 03:01 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

The guy has helped a dozen or so people around town here over the years.

I am trying to help him in return.

I'd just about kill the guy that took it up to that shop, but what's done is done. I do not think they are incompetent as much as NOT SUITED to regularly working on large objects, they did a fine job on one of his amplifiers.

**tad_scsi** · 04-10-2015, 03:06 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

according to a friend who was with them when they dropped it off, they several times indicated they really don't do TV repairs. I doubt that it has been savaged as much as ignored.

**stj** · 04-10-2015, 03:08 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

let me tell you a trade secret.
the one thing that pisses engineers off the most is people who dont pick stuff up.
space is short and costs money.

if the "shop" is not bugging the guy to either pick it up or sign it over to them, then something is wrong.

if i repair something - i want it gone.
if i cant repair something, i also want it gone.

**Alastair E** · 04-10-2015, 03:08 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Err--

Why...?

Take a TV set--to a HiFi shop?

Take a set on a 70 Mile trip to another town,--to a HiFi shop, and Not a Proper TV place?
--I just Dont get it!

Caps--as you know--are STANDARD Components that every electronics workshop have--so the excuses of not having parts is--Utter Crap!
--Even if they were oddballs--easy enough to order 'em in, or if out of stock--again easy to get....

Anyway--NOTHING can be done--Till its back home, we can speculate as to whats wrong till cows come home (Or the Pan.) but nothing will be confirmed till its examined by someone with knowledge.....

Sounds to me--your friend has written the set off--IF he doesn't want to go get it....

**tad_scsi** · 04-10-2015, 03:18 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

The guy is too trusting of others opinions who have opinions that are not qualified. A long time colleague of his (they taught music together at a local college) had given him the name of the shop. The guy is his best friend, he drops everything to go and do stuff with the guy on a moment's notice. They're both in their 70's - you probably get the picture.

**tad_scsi** · 04-10-2015, 03:20 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

And while I appreciate the concerns Alistair, I am merely asking - does anyone have the values of the cap.s at hand, everything is really, irrelevant.

**newtothis** · 04-10-2015, 03:24 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Totally agree with the above comments.

That set is gone (Either completely or its in bits or it doesn't have the same parts in it) I very much doubt you will have that back in the same condition that it was sent in.

Why now after all this time does he want it back? Why leave it so long?

Something is just really off about all this.

I would be god damned if I don't have a cap lying around here for any job, I don't have my own shop yet still..... Even if I didn't do TV's and did HiFi's I would still have caps and still be able to check and replace them.

As stated Panny's are known for other faults over Caps anyway, I have a couple sitting here with failed SC boards and SN boards. They are a pain in the ass to get hold of and a pain in the ass sometimes to repair.

To answer the Cap values.... You need the TV there in front of you to check... One tv may have part# XXXXX yet the same brand and model Tv may also have part#XXXXY. Also its a waste of time finding cap values as that won't be the fault I can pretty much assure you

**tad_scsi** · 04-10-2015, 03:27 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

I've seen some other choices the guy has made in getting help (note the ungrounded circuit debacles). Nothing surprises me. He's had awful roofers and craftsmen in here too.

But, as I have since come to his rescues with several other repairs, including his boiler (failed control) in sub-zero weather, multiplying the speed of his otherwise un-upgradeable computer (SSD), and have shown him some tricks for imaging onto glass (he's a master at stained glass, really - he is) I think he realizes he should have listened to the shop when they downplayed TV work.

**jetadm123** · 04-10-2015, 03:31 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

Originally posted by tad_scsi View Post

And while I appreciate the concerns Alistair, I am merely asking - does anyone have the values of the cap.s at hand, everything is really, irrelevant.

I may be stating the obvious, but why don't you just call up/ email the shop and ask them what the values are?

**tad_scsi** · 04-10-2015, 03:53 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

I think he's afraid what I might say to the guy, but that would be because he's heard me excoriate someone else who got in my way of a repair. I guess when you've worked on as many different things as I have (hi-speed assembly to CNC machines to fully air powered pneumatic analog & binary logic pneumatic controls) the guy at the hardware resisting replacement of failed part putting you through the paces while arguing the highly unlikely, is kinda asking for it.

But the elderly gentleman didn't see it that way and chewed me out for it, never mind he wasn't there for the litany. He hadn't known me that long at that point either.

**tw2005** · 04-10-2015, 04:53 PM

Re: Capacitor ID for Panasonic Plasma TC-P50VT25

These are on a 50GT25 P board but will be the same. electrolytics

c256 1000uf 230v CE nippon chemicon
c406,408 1800uf 80v KMQ
c560 220uf 25v ZL Rubycon
c561 10uf 50v ZL Rubycon
c404 100uf 50v ZL
c366 560uf 35v ZL
c403 470uf 140v KMG
c352 560uf 35v ZL
c554 820uf 25v ZL
c551 470uf 10v ZLG
c701 220uf 10v ZL
c514 220uf 50v ZL
c505 22uf 50v ZL
c623 390uf 450v CE CHEMICON
c503 47uf 450v PAG CHEMICON

So, do you have any symptoms to share from the original fault, blink codes etc ?

Is this the same Tv with no ground from this post? last I read it looked like the A board had been corrupted but somehow the TV fixed itself.

https://www.badcaps.net/forum/showth...ght=tc-p50vt25

http://elektrotanya.com/?q=showresul...at2=schematics

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Capacitor ID for Panasonic Plasma TC-P50VT25

Capacitor ID for Panasonic Plasma TC-P50VT25

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