Panasonic TC-50PU54 8 blinks picture flashes then dead

[scotha]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Sorry to intrude on an existing thread I'm not able to open a new thread for some reason. I have the tc-50pu50 with 8 blinks also and replaced the parts on the ss board to correct this and noticed that component PC251 broke off the board and is nowhere to be found, does anyone know what this component is? It is on the TNPA5623 ss board.

[georgewde]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

[QUOTE=pb86;423440]I have TC-P50UT50 since Aug-2012 and all of a sudden yesterday TV went bad with 8 Blink behavior. I've extended warranty so trying to go through that first.

Thanks pb86, my TC-P50U50 went bad with the same symptoms and its exactly what you posted in your trouble shooting bulletin. Transitor burned out, PCB is burned and arcing marks on the PCB. I ordered this parts kits and hope it will fix it:
http://www.ebay.com/itm/201131281274

[Newbie_TCP50U50]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hi all. Im a Newbie. I was hoping to get some feedback and opinion on repairing a Panasonic Plasma TV, model TCP50U50? Ive seen so many varied data sets online I figured Id post here and see if anyone can give me some feedback.

I will share my findings as they come. I took the TCP50U50 to a Panasonic recommended repair shop (I could maybe have done the repair, but again Ive seen so much varied info it may be out of my league). In any case right now Ive spent $70 to diagnose the problem (I took TV to shop vs. service call). The $70 will be applied to repair (if deemed "fixable" or worthy of repair).

Here's the crux... out of warranty, just over 2 years since purchase. Semi-frequent use (average 4 hrs a day). Now I could have sworn it originally blinked 8 times, after I lost my picture. However when I took it into the shop we plugged it in again and it blinked 7 times.

So what do you guys think? I appreciate any friendly feedback. Again, I'll update with the repair shops diagnosis, cost, if it's fried, et. I guess Im wondering if anyone familiar with this TV thinks I have any shot in HE** of having it repaired successfully at a reasonable cost? Id hate to go buy a new one. One, b/c it's not that old, but two, Im just sick and tired of the throw-away mentality many of today's manufactured goods elicit from customers. A box fan (to cool the house) lasts a year or two, then its done... time to buy a new one. (sorry to editorialize).

Anyway, thanks in advance to any insight you may be able to offer! Much obliged!

I forgot to follow-up on this. I took it to a Panasonic Preferred Repair shop (saved the $$ on an in-house visit). They Diagnosed the problem for $75... this was deducted from my repair bill, as the Repairman said the board that needed replacement isnt the worst case scenario (Im sorry, I cant recall which board... I can look it up on the invoice if anyone's curious). It baried from 8 blinks, then to 7 blinks (Im almost positive it started as 8 -but maybe I was so pissed my mathematics / addition skills were lacking when it first went out.

So I opted to have it fixed, and it works pretty damn good! $250+\- for the repair (I inherited the TV so it's not that much considering I didnt buy it new).

My only question now is, the HD picture just doesn't seem to sharp. Is this due to the 50inch size? Or is it due to my Cable Connection signal strength? My smaller LCD TV's are much more crisp. Ive tweaked the settings but it seems less HD than what Id hoped.

So does the larger the size effect sharpness/quality? Thanks in advance guys! My only other complaint is this TV gives off a fair amount of heat! Not bad in the winter, but it's a power hungry set to begin with, compounded with emitting more heat than many LCD's for eg., it likely ups my electric bill.

Hope my feedback helps. For me, the $250+\- to fix seems worth it.

Thanks in advance. Great forum/website! Hey Now!

[resinis]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hello all

I have a TC-50pu54 with the 8 blink problem.

Replaced the transistor, diode, resistor and IC as per the shopjimmy repair kit

No change. Sucks, thought I had a cheap tv to use. The resistor WAS blown, but everything else seemed ok. I do hear a faint buzz right before the power supply click off, its coming from the SS board. I can get a new SS board for $100.... might just try it

EDIT- hey, I do notice though, now after the 'fix', the panel does light up for a second before it clicks out again. I also did the TP101 test and it there is no short, the the A board should be OK. I think I just need to replace my SS board entirely...

[resinis]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hi all. Im a Newbie. I was hoping to get some feedback and opinion on repairing a Panasonic Plasma TV, model TCP50U50? Ive seen so many varied data sets online I figured Id post here and see if anyone can give me some feedback.

I will share my findings as they come. I took the TCP50U50 to a Panasonic recommended repair shop (I could maybe have done the repair, but again Ive seen so much varied info it may be out of my league). In any case right now Ive spent $70 to diagnose the problem (I took TV to shop vs. service call). The $70 will be applied to repair (if deemed "fixable" or worthy of repair).

Here's the crux... out of warranty, just over 2 years since purchase. Semi-frequent use (average 4 hrs a day). Now I could have sworn it originally blinked 8 times, after I lost my picture. However when I took it into the shop we plugged it in again and it blinked 7 times.

So what do you guys think? I appreciate any friendly feedback. Again, I'll update with the repair shops diagnosis, cost, if it's fried, et. I guess Im wondering if anyone familiar with this TV thinks I have any shot in HE** of having it repaired successfully at a reasonable cost? Id hate to go buy a new one. One, b/c it's not that old, but two, Im just sick and tired of the throw-away mentality many of today's manufactured goods elicit from customers. A box fan (to cool the house) lasts a year or two, then its done... time to buy a new one. (sorry to editorialize).

Anyway, thanks in advance to any insight you may be able to offer! Much obliged!

theyll probably stick you with a bill that is about $75 less than what a brand new LCD tv would cost.

I know, i used to work at one of those places. They normally just swap the board out thats bad too. if they go component level its only when the fix is obvious or well known.

[Newbie_TCP50U50]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hi all. Im a Newbie. I was hoping to get some feedback and opinion on repairing a Panasonic Plasma TV, model TCP50U50? Ive seen so many varied data sets online I figured Id post here and see if anyone can give me some feedback.

I will share my findings as they come. I took the TCP50U50 to a Panasonic recommended repair shop (I could maybe have done the repair, but again Ive seen so much varied info it may be out of my league). In any case right now Ive spent $70 to diagnose the problem (I took TV to shop vs. service call). The $70 will be applied to repair (if deemed "fixable" or worthy of repair).

Here's the crux... out of warranty, just over 2 years since purchase. Semi-frequent use (average 4 hrs a day). Now I could have sworn it originally blinked 8 times, after I lost my picture. However when I took it into the shop we plugged it in again and it blinked 7 times.

So what do you guys think? I appreciate any friendly feedback. Again, I'll update with the repair shops diagnosis, cost, if it's fried, et. I guess Im wondering if anyone familiar with this TV thinks I have any shot in HE** of having it repaired successfully at a reasonable cost? Id hate to go buy a new one. One, b/c it's not that old, but two, Im just sick and tired of the throw-away mentality many of today's manufactured goods elicit from customers. A box fan (to cool the house) lasts a year or two, then its done... time to buy a new one. (sorry to editorialize).

Anyway, thanks in advance to any insight you may be able to offer! Much obliged!

[resinis]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hello all

I have a TC-50pu54 with the 8 blink problem.

Replaced the transistor, diode, resistor and IC as per the shopjimmy repair kit

No change. Sucks, thought I had a cheap tv to use. The resistor WAS blown, but everything else seemed ok. I do hear a faint buzz right before the power supply click off, its coming from the SS board. I can get a new SS board for $100.... might just try it

[Tuna Bait]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

moduslinkpts do repair/return

Thank you I wil give them a call today..

[tw2005]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hey guys, First off thanks for all the great info on here. My TV went out couple days ago, my question. I live on the coast and there no tv repair places that can do this fix for me. I don't want to try to do the solder work as my skills only go as far as rc cars and wires ect ect. Is there a place a can get the ss board online and do the job myself without the repair kit? And is it worth it for me to try to do this myself? I cant seem to find any ss boards online. Thanks

moduslinkpts do repair/return

[Tuna Bait]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Hey guys, First off thanks for all the great info on here. My TV went out couple days ago, my question. I live on the coast and there no tv repair places that can do this fix for me. I don't want to try to do the solder work as my skills only go as far as rc cars and wires ect ect. Is there a place a can get the ss board online and do the job myself without the repair kit? And is it worth it for me to try to do this myself? I cant seem to find any ss boards online. Thanks

[tw2005]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

There's a possibilty the driver ic could be bad. have read someone reporting they had to replace it. The shopjimmy kit has all that plus the screws.

that pad looks not too bad, maybe a light rub with fine emery to clean up , clean up the chassis too if burnt

[ddpl]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I was able to have the Resistor/Capacitor/Diode as mentioned by the technical bulletin replaced by someone, but I am still unable to get past the 8 blinking LEDs issue. I believe it may be the grounding pads as pictured below that may be at fault. What can I use to refill them in order for the board to maintain better contact?

Thanks.

I've reuploaded the image for sake of clarity. What can I do the repair the sections marked by the red arrows?

[ddpl]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Did you replace the FET/IGBT too? (other device on the heatsink)

Yes I do believe it was replaced (I wasn't the person who did the repair, but I do trust him).

[abdekader]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

in power supply the red capacitor beside the 450 capacitor what's the value ?

[tom66]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Did you replace the FET/IGBT too? (other device on the heatsink)

[ddpl]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I was able to have the Resistor/Capacitor/Diode as mentioned by the technical bulletin replaced by someone, but I am still unable to get past the 8 blinking LEDs issue. I believe it may be the grounding pads as pictured below that may be at fault. What can I use to refill them in order for the board to maintain better contact?

Thanks.

[tw2005]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I assume you have read the tech bulletin attached to post #78?

[tw2005]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I feel really stupid, I disconnected a cable between ss and a board that's why it wasn't blinking. After reconnecting it and making sure everything is hooked up and all screws are tight, I still get 8 blinks.

I don't know what to suggest except to get a multimeter and start checking the SS board for shorted transistors, possibly a DG302 I think is the one that commony fails. Are there any burn marks on the panel where the board mounts?

[dimafl666]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

I feel really stupid, I disconnected a cable between ss and a board that's why it wasn't blinking. After reconnecting it and making sure everything is hooked up and all screws are tight, I still get 8 blinks.

[tw2005]

Re: Panasonic TC-50PU54 8 blinks picture flashes then dead

Exact model 55st50. When I replaced ss board in first place 8 blinks never stopped, so that's when I replaced A board. After I replaced A boarding was like, hmmm, what if replaced ss board was junk, so I went back to my original ss board. All same, no blinks now, just solid red light with no picture. Will make pictures tomorrow. Both of the replaced boards I got from eBay, different sellers, both claimed boards came from working tv

the fact you now have a TV which sounds like it is not even trying to turn on or error blinks makes me think it's the wrong A board or may have another issue.

hard to say, really need to fault find it more, a multimeter may help.

A board needs to be marked as the picturem rev UB

the pink highlights shows ho to work it out. from shopjimmy site