Panasonic TH-50PZ800B ... an idiot got hold of it

[tom66]

So, picked up this 50" Panasonic to repair and give to a friend's dad who helped me with a lot of the things around the house.

Guy claimed he had never opened it, well I could see one screw loose so yeah. So much for that. Anyway, he looks like he has never used a soldering iron on it, so that is good.

It's dead, no power. The first damage, he managed to take some pins off a chip on a module on the power board - MC701. (The bent and missing PCB pins are due to quick removal of the original module... he didn't break those!) The power supply did not have any standby voltage on pin 9 of P25. Luckily I had a spare module from a 42" board and they are identical. This resolved this first problem, but the TV is still dead, which I suspect is the original fault (before this idiot messed it up further... seriously people should stay away from stuff they don't understand!)

Trouble is, the standard test method of unplugging two connectors to get a white screen doesn't work on the PZ800 series. So I need to find an alternate method.

[tw2005]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

yes it does, A5,A6,A7 from memory unless a 50PZ800 is drastically different to a 46PZ800. I've done it and get full white.

If the LVDS is left in it still fires up, just with a dull grey panel

[tom66]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Unplugged some connectors and found I could get it to click but no prime. Vsus tested OK at 191V for some seconds before shutting down, loaded it with a 100W bulb to be sure and it's nice and steady. So seems the power board is probably OK.

Then... Ugh. I noticed yet more damage he has done. He's ripped an entire bloody inductor off the SC board!! And lifted a few SMDs and scratched a few traces! His damage does not extend to the SS board thankfully. There are some scratches on SD but none major, and the SU has survived too.

He is a vandal, but why? Why has he done this? I am worried now, but if he wanted to cover up something, like a bad panel (rare but I suppose possible on a PZ80), he would just have to unplug the mains power connector, or an SC/SS board and it would give a blink code. So I'm still assuming stupidity over malice.

Possible explanation: He mentioned he tried to claim warranty on it but lost the appropriate papers. Maybe he was trying to break his own TV so the tech would decide it was uneconomical... but any reasonable tech would surely look at this and see it's been fiddled with! And if he had a friend who was a tech who could make the claim for him, he wouldn't need to do it in the first place. So WHY?

Maybe he just hates Panasonic plasmas!

He has kids; I think he should be careful. He might accidentally stab them in the night.

[freakaftr8]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Nice. Love the hack jobs. There always a treat. It's always nice to find the toy surprise inside. Lol

[Neelix]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Who knows, maybe there was nothing wrong with the TV to begin with and the guy just wanted another TV. So he deliberately damaged the boards to make the TV have a fault, but his plan back fired because he did not have the correct warranty paperwork

[Alastair E]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

There are some strange guys out there....

A week ago, a guy txt me offering me a 47" Panasonic LED set he said was faulty, a list of various texts directly followed listing that he had replaced the PSU, Mainboard, BL board, this that and the other....

I made him an obscene low offer (as I didn't want his bag of man-made problems, got a sack full of me own!)

--The reasons I text back was, Because it had been Potched with, and that it was an LED TV and probably with a stuffed panel anyway--seeing as he had replaced the entire set contents except the panel!

Oddly--I didn't hear back--Which was nice......

[Shinju]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Tom66 I feel your pain!

Although I have yet to run into something this nasty I think this Hitachi I have is probably up there as the worst I have gotten from a private party that was tinkered with.

I will give the guy credit he was very upfront about what he tried and had all the parts.

Good luck!

[tom66]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

I'm pretty sure this guy was trying to do a warranty jobby here. Get a new TV in other words. He's done damage to the main board. Destroyed whole groups of pins on some chips. LUCKILY, I happen to have a 42" PZ800 main board that's spare, so I may just be able to rescue this.

Seriously, it wouldn't bother me if he just removed a fuse or something. AND IF HE ACTUALLY TOLD ME instead of just lying to me!!! But he was vandalising this. I am sure the tech just laughed as soon as it got opened up. Maybe he doesn't realise that Panasonic actually try to repair the faulty TVs.

[Shinju]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Ugh, so lame.

Hope you can save it!

If you were local to me I have a pretty good pile of Panny plasma parts for a 85U that are in good working condition I would let you dig through

[Alastair E]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

I'm pretty sure this guy was trying to do a warranty jobby here. Get a new TV in other words. He's done damage to the main board. Destroyed whole groups of pins on some chips. LUCKILY, I happen to have a 42" PZ800 main board that's spare, so I may just be able to rescue this.

Seriously, it wouldn't bother me if he just removed a fuse or something. AND IF HE ACTUALLY TOLD ME instead of just lying to me!!! But he was vandalising this. I am sure the tech just laughed as soon as it got opened up. Maybe he doesn't realise that Panasonic actually try to repair the faulty TVs.

Aye--Ive met this type of prat before....

Very best way to wind 'em up is to tell 'em that the set is now working beautifully and that they can buy it back if they like.......

It certainly sounds like he murdered it deliberately--but surely sense would tell these people that NO guarantee on earth will cover a deliberately vandalised set! I'm sure they must think that Ins Co's don't record details of such things as Serial Numbers, and past track records of claimants....

Ive NO sympathy for scum that do this sorta stuff, They deserve everything they (Dont) get!

I hope you didn't pay much for it......

[tom66]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Paid £60 for it... really too much all considered but was hoping for an easy fix. I need to be more careful next time and avoid these kinds of people. Hopefully, it will live soon.

I am donating it to a friend's dad, due to him being an extremely nice guy, to replace a ~10 year old Pioneer 6G 43" 720p plasma.

[Shinju]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

^ nice, I just gifted a Sammy HP-T4254 to my grandfather who still had a 24" RCA CRT from the late 90's

He will be in for a shock on Xmas morning, my dad found it at their local dump/recycle and brought it up for me to keep/fix. The PS was clicking and I got working PS from Capkid and popped it in and it fired right up. 20k hours on it and not a single burn in and an excellent picture.

Those HP-T sets were pretty solid, I am getting a HP-S5053 for free this weekend.

Keep us posted

[tw2005]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

Must be dad day. I'm hoping to get a TH-P50U30A up and running for my old fella. $50 score on Ebay. Hoping just 4 IGBts and 2 Diodes.

How far away from getting this one up Tom?

[tom66]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

I don't think I'll be able to get it done before Xmas. I wanted to do that, but I am leaving for Xmas to visit parents, so I have ~10 days to get it finished...

[tw2005]

Re: Panasonic TH-50PZ800B ... an idiot got hold of it

I don't think I'll be able to get it done before Xmas. I wanted to do that, but I am leaving for Xmas to visit parents, so I have ~10 days to get it finished...

Oh well, it's a different challenge from the norm, really is weird the damage there.