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Master thread for Panasonic plasma not turning on - Page 59

post #1741 of 1758
4/18/13 at 6:17pm
Quote:
Originally Posted by Pansonic1234 View Post

Installed the new SU board and everything fired up just fine. The TV Worked for a day and then turned off with 7 blinking lights again. Maybe it is the two Caps people are talking about? They could not be regulating the voltage properly and damaging parts. I felt I was so close...

I have a TH-50PX75U with the exact same symptoms as your set. With the help of this board I was able to diagnose the problem to the SU board. Very hard to find this part for this model, but someone in Canada had disassembled one of these and was selling the parts on eBay. I bought the SU and SD cards (sold as a pair) and they are on their way.

I thought I had this nailed but you have now made me very nervous. I'll let you know how it goes.

- Voy
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post #1742 of 1758
4/24/13 at 11:45am
Quote:
Originally Posted by latenighttech View Post

I've got a Panasonic TC-P58S2, manufactured Oct 2010, purchased on Black Friday 2010.  It's been working fine until yesterday when it turned off abruptly (while watching it) with a 'pop' (but no typical burnt electronics smell) and then was completely dead (it had been on an hour or so).  It has no flashing lights, does not respond to the power button, etc., just dead.  I searched the internet and came upon this forum and all of its great resources, and through it found the schematic diagrams and trouble-shooting guides, but haven't found anyone reporting the same problem.  In my attempt to troubleshoot it, I could not find any obvious blown components, no dark/discolored areas, etc, but I did find the F501 fuse blown, which is on the 'hot' side of the power supply board, but it's not one of the primary fuses on the Mains.  So quick and dirty attempt to make more progress, I jumped around that blown fuse (2A/250V) with what I had handy, a 5A/250V.  My thinking was if it was some kind of direct short, it would take out the new fuse too.  Well, in retrospect, not a smart move as when I plugged it back in I had about 5 seconds of "progress" (some click of relays was heard) then a white square box lit up and everything went dead again.  The white box was 'RF601' a "THERMAL CUTOFF WITH RESISTOR," apparently another flavor of fuse downstream from the F501 fuse (which didn't blow this time -- the current draw was apparently something less than my 5A temp fuse).  So now I have at least 2 problems on the 'P' board:  the original F501 fuse, and now this blown RF601 thermal device.

 

UPDATE:  I went ahead and replaced the P1 board (which had the aforementioned blown fuse and smoked thermal cutoff) and TV is working fine again.  A very simple fix given the problem was restricted to that single board, which was very easy to swap out.  I bought the replacement board on e-bay through seller 'rakicomputers' out of Houston, TX - $57 shipped.  3 days from order to delivery, and it appeared to be new in original sealed anti-static bag.  Overall a very positive experience and I'm a happy camper again.  Thanks again for all the great resources of this forum and contributors, and hopefully my experience will be of value to someone else downstream.

 

- Mark

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post #1743 of 1758
4/27/13 at 1:36am
Sir I live in Islamabad Pakistan, I Have Panasonic th42pc10m PDP bought it 3 years ago last night suddenly red light of death.......LED blinks 14 times and then a pause and repeats the sequence
Advice further action as I can do some minor electronic repair myself
thanks
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post #1744 of 1758
5/1/13 at 7:59pm
Best Buy is having trouble getting an SC board for my 1.25 year old 55GT30. We'll see what they decide to do (replacement?).
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post #1745 of 1758
5/14/13 at 3:49pm
So...I'm the guy with a 2009 TC-P42G15, (purchased Dec 2009).

I've narrowed down the problem to the "A" board. Of course, it's the most expensive board in the set. A repair shop is quoting me $411 for the part. I can't find a single one online to buy. My choices seem to be buy directly from Panasonic, buy it from the shop and replace it myself, let the shop replace it, or buy a new set.

Now for the questions:

Anybody know where I can find a TNPH0793AK board? (Also known as TXN/A1FHUUS)

If I install the board myself, are there calibrations I will have to do, that the shop is better equipped to do? I'm pretty handy replacing boards, but have no clue when it comes to calibrating one of these things. I like the THX mode and it's pretty much the reason I bought the set. I would not like to screw that up.

I guess the big question is: should I throw good money after bad? I'm pretty disappointed repairing this thing 3 years after I bought it. I spent the extra money on a good set, justifying the cost with "the set should work for 10 years". (I'm in Canada, and I probably spent 1400 on this TV in 2009. A $5-600 premium over a 42 inch low-end Panasonic Plasma). If I'm spending 4-500 fixing it after 3, am I going to be spending the same amount 2 more times in that 10 years?

The more I think about it, the more cheesed off I'm getting...paying > $2000 for a 42 inch TV within 3 years of me buying it is ridiculous. Panasonic really f'd me on this one....

If I was going to buy another TV, what should it be?
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post #1746 of 1758
5/14/13 at 8:34pm
While watching tv Sunday there was a loud pop from the back of the tv, the screen went black and the red led started flashing a 10 flash sequence. I unplugged the tv for a few minutes, plugged it in and pressed the power button, now it flashes a 4 flash sequence. The set is a 2010 TCP54G25. Any suggestions? Thanks in advance.
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post #1747 of 1758
5/15/13 at 7:17am
Hello everyone I am new here (unfortunately).

tcp50gt30 purchased in Erie, PA at hhgregg

I work at the store so I know the television originally came from a warehouse in Maryland.

Thursday night set was fine then all of a sudden it powered down. I am now getting 7 blinking lights.

Build date July 2011

Panasonic could care less because I am out of manufacturer warranty.

I'm somewhat handy with electronics and wouldn't mind repairing the unit myself. Does anyone have a active link to a service manual or experience repairing a gt30 series? Any help would be greatly appreciated.

Ryan
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post #1748 of 1758
5/15/13 at 3:18pm
Quote:
Originally Posted by ryanw89 View Post

tcp50gt30 ... Does anyone have a active link to a service manual?

http://elektrotanya.com/panasonic_tc-p50gt30_chassis_gpf14du_sm.pdf/download.html

Probably the SC board went bad. I think there was a firmware update for this series that corrected faulty firmware that seemed to destroy the SC boards.
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post #1749 of 1758
5/15/13 at 4:57pm
According to the service manual I found, 7 blinks is either a su-board or an sd-board. 6 blinking light says sc-board as does 10 blinking lights. Does anyone have experience with a sc jig. Or would anyone be willing to sell/lend me one. [IMG]

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post #1750 of 1758
5/16/13 at 8:01am
The "SC jig" is a fancy piece of wire, it just connects the two pins on SC50 together. You can do the same with an alligator clip, HDD option jumper, etc.
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post #1751 of 1758
5/17/13 at 5:58am
I was reading this thread on another site:

http://www.justanswer.com/tv-repair/6c0j2-viera-tc-p55gt30-55-inch-tv-working-perfectly-until.html

We had a lightening strike in my neighbors yard yesterday about 300 feet from our house with that large electric pop you hear when that stuff happens. Never lost power, cable was out for several hours. The TV hasn't worked since...dead...dead...no clicks no lights NOTHING, nothing else is damaged even things plugged into the same surge protector. I was wondering if I should try what this thread suggests. Our model, viera-tc-p55gt30, has a smaller panel right where the cord comes in that I could probably easily remove just by standing behind the tv. Repair can't come for five more days...but I am afraid of causing more harm and having an issue with the home owner's ins. if I try to mess with it myself. Any thoughts? Thanks.

We tried unplugging everything, different outlets, etc. The only thing not working is the tv.
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post #1752 of 1758
5/17/13 at 7:59am
If you got a warranty, then wait for that.
Get some fresh air, walk the dog, maybe drive around a little... rolleyes.gif You can't live 5 days without TV?
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post #1753 of 1758
5/17/13 at 8:51am
As I stated, it would be home owner's insurance so no, no warranty.

If it's something I can fix myself why would I pay for them to come out and wait five days? I'm not that lazy and I certainly don't waste money.

And I guess now, since tvs are so expensive, I also have to have verification from the tv repair shop, if it's not repairable, that it was a surge for the insurance to cover it since there is no other damage. If there are "no visible signs of a surge" in the tv, the repair shop will be putting on the paperwork that it is "consistent with a surge" and it will be the insurers discretion as to whether to cover it.

So, if I can have it resolved quickly and without having to stress over what's going to happen waiting on someone else...that's the route I want to take.

I would go for a walk too if I had nothing better to do then contribute to a request for help with no help, cause really, how rude. I unfortunately have to sit here and wait for the cable guy to access the situation from their stand point.
Edited by ChristinaG - 5/17/13 at 9:08am
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post #1754 of 1758
5/17/13 at 11:36am
I have a Panasonic HD Plasma. Made in July 2008. Model number TH-50PX80X. I've been told it is a "X" instead of an "U" because it was sold in Costa Rica. I changed the A board about a year and a half ago as a result of my first encounter of the Panasonic kind, the blinking red lights of death. I worked well until a couple months ago, when one morning it wouldn't go on and gave me 9 blinking red lights of death.
So, I finally dragged it up onto a table I won't need for a while and took the back off and reviewed and disconnected and reconnected all connectors. Plug it back in and now it gives me just 1 blinking red light of death. (BRLOD). Where do I begin to troubleshoot now? I spent a couple hours going through posts and didn't spot my particular gripe. I am a decent electrician, could someone tell me where to read some voltages to narrow down this issue? I live way out in the boondocks in Costa Rica, so dragging it to the city so some guy can charge me $600 for work he won't stand behind isn't going to happen. Eagerly awaiting words of wisdom. David Dollarhide Montezuma Costa Damn Rica.
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post #1755 of 1758
5/17/13 at 6:28pm
1 blink is A board defect often but can be COMM error between A & D board. So double check connections secured between those boards.
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post #1756 of 1758
5/17/13 at 7:26pm
I just now noticed this thread. Can anyone in here help me with my st30 repair?

http://www.avsforum.com/t/1473232/panasonic-st30-repair-help-please
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post #1757 of 1758
5/17/13 at 11:02pm
Hi Tom, thanks for your time. On my model, isn't the D board integrated with the A board? I understand if it isn't a bad connection between A and D I should be looking for a fail on the STBY 5 volt.... but anyway. Where is D? Thanks Tom. Dave TH-50PX80X (U).png 224k .png file
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post #1758 of 1758
5/18/13 at 3:52am
I was working off it being the same as the PZ series (1080p); obviously I was wrong. Hmm. In which case, you probably have a faulty A board.
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