Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I have a Panasonic 50" Plasma TC-P50S2 that has the 10 blinks of death. I turned the TV on as usual to catch the nightly news. After about 5 minutes the TV turned off and wouldn't turn back on. After unplugging it and plugging it back in, the TV would make a few clicks and then flash the 10 blinking lights. I did notice that before the power light starts to flash there is one or two less relay clicks than it had when it was working properly. I've done some research and think there may be a problem with the P board, but I cannot seem to find a diagnostic procedure to confirm the P board is actually bad. I'm not looking to replace individual components on the board but instead just replace the board if it is indeed bad. Can I get any help with diagnosing this issue, please? Thanks!
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I posted a troubleshooting guide recently now five pages back. -
Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
service manualComment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Probably "A" board. Very problematic in this set. The main processor somehow loses the 1.1 V core voltageDid I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I found your guide and I narrowed it down to the SC board using the flow chart for code 10 full HD. 2 questions, 1) I read that if the SC board fails repeatedly with a shorted Vsus then replace the A board as well. How do I know it has a failed Vsus and Using the flow chart in your guide would that be enough times to have to replace the A board as well? 2) I noticed when plugging SS11 back in I heard a small arc. Is this bad? I did wait a few minutes and held the power button for a few seconds before I plugged it back in.
Thanks a bunch!Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I'm no guru with these plasma sets so I would just check the vsus for short and if it is OK then replace SC if price acceptable. Hopefully the arc was just a discharge from a capacitor still carrying some charge. Input from others more experienced is welcomed.Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Do an ohms test on the two leads that go into the SC and SS boards from power supply. Unplug both cables and test on the sustain board side. If you Get a consistent beep or a low ohms reading almost short then the board is badDid I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Also I would advise doing a voltage test while everything is still connected to see if the power supply is trying to push a VSUS. If not then disconnect one board at a time and see if you get stable VSUSDid I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
On the SS board I have a three wire connector @SS11. Between pins 1 and 3 I have 1.3M ohms, between pins 1 and 4 I have 1.4M ohms. On the SC board at connector SC2 I can't get a stable reading. It started at 1.4m Ohms but was steadily dropping.Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I did the reistance test to the SD, SU, and SC boards. I found the SD and SU boards tested a smidge under the 2.1M Ohm spec. The SC board however tested OL @ pin 3 and 2.9K Ohm @ pin 5 on Connector SC42. I'm assuming the SC board is screwed.
Where is the VSUS and how do I test it?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Sounds ok to me. With TV powered immediately check DC voltage at SS11. See if your voltage comes up and then drops off. Should have 200+ volt thhere so be careful. Black probe to one wire color red probe to the other wire color. I believe one wire should be white and 1 wire should be blue? Or could be blue and tanDid I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
One lead to white, one lead to either brown. The brown are connected together anyway internally.Did I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Got 200 volts then it slowly drops off.Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Usually when power supply voltage comes up there is no short on SC or SS. Even if it drops off. Suspecting a problem with the A board.Did I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Look for shorts on mosfets on SC first.Did I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
I tested the voltage with the cables disconnected. Should i test it connected and back probed? How do i test the mosfets?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
Yes connect the SS board 1st then check for voltage upon power up. If you have Good voltage then connect SC board in check for voltage if you have none then your SC board is shortedDid I leave the soldering iron on?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
The SS board gets to 200v and fades. The SC board peaks at 800mv then fades to 200mv. Sounds like the SC board is the culprit. Is there an easy common fix for these boards or is it just better to replace it?Comment
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Re: Panasonic TC-P50S2 10 Blinks Diagnosis Procedure
If you have soldering skills I would attempt a repair because I believe that board is unobtanium. That's a rare Earth element lol.Did I leave the soldering iron on?Comment
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Hello! yes I know there is already lots of information about this issue. I have a Panasonic TC-P55ST50 that originally displayed an 8-blink error code. Following the troubleshooting flowchart, I ended up replacing the SS board. However, even after replacing it, the issue persists. The TV turns on and stays on without displaying an image, and continuity is confirmed on all connectors. What am I missing here🤔?
Ok Im a mechanical engineer ...but I thought I was able to follow a rather simple flowchart for electric troubleshooting 😂.
TV Model: Panasonic TC-P55ST50
...11-20-2024, 08:52 PM -
Bought this TV used not working, panel flashed briefly on power up and it was blinking 8 times, a quick look on SS board revealed a common fault on the 3uF 250V capacitors, C201 to C205 (C1620X in the service manual), the solder joints were all cracked, C201 and C205 pins were darkened and some sparking had occurred on them, C201 was split open and clearly overheated in its last hours, replaced that one and resoldered the others, 8 blinks fixed.
Also the previous owner broke the antenna connector by taking the TV out of the wall mount forgetting to unplug it, I desoldered the tuner... -
Hi,
anyone able to provide the service manual for old plasma Panasonic TX-P42ST50E?
It turns off almost immediately (0~5 seconds after pressing the on/off button) and starts flashing the red diode 6 times.
I disconnected the left-hand side board (SC?, both the ribbon cable and the power cable to it) and also another ribbon going to bottom left board. Then the led signal is 8 flashes. According to service guide to another Panasonic plasma it would mean the left-hand side board is faulty. But I'm not sure it 100% applies to my model.
I checked that board for any obvious faults... -
Hello,
Stopped by this site trying to fix my parents Panasonic Plasma TV.
Model number is TH-50PZ85U
Power comes on and the red power light stays on solid.
Did a few checks like hold the power button on for 60 seconds, hold the - Volume while holding the menu button, no luck, still@ blank grey screen as the screen lights up very vague.
I also hear a few clicks.
I also think my parents said there was a thunderstorm and the TV failed after that.
Section 6 in the service manual talks about power and no screen,...10-30-2024, 10:09 AM -
Hello all,
As the title states, I followed the troubleshooting guide located here: https://www.manualslib.com/manual/23...page=53#manual, which concluded the 'A' board needs to be replaced. Looking around the net and eBay, I see that there are repair services for the board (TNPH1043UE? Not sure if it is a 'UE' as the suffix grid does not appear marked). What additional troubleshooting can be performed to ensure 1) this board is the problem and 2) since there are repair services, what are they fixing on the board?) I expected 3.3V not to be available anywhere...
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