Re: Panasonic tc-p50g25 10 Blinks
Board swapped, TV is working, thanks for the help!
andrewnelles
Member
Last Activity: 06-03-2015, 09:23 PM
Joined: 03-17-2014
Location: Chicago, IL
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Re: Panasonic tc-p50g25 10 Blinks
Bought a refurbished board on EBay, quicker than doing an exchange, and that's the most important thing right now.
No idea what I'll do with the old board.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
I noticed that too. So odd that on Slide 44, they show it as the probe point for reference ground. Doesn't seem to run to GND, and it doesn't appear to be a fault either. Odd.
Replacement SC board on the way, I'll report back when it arrives. Looks like I'm clear to safely install it.Last edited by andrewnelles; 03-21-2014, 01:31 AM.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Checked both buffer boards as directed by the document you mentioned. All resistance values near SU41 and SD42 were near what was listed. Definitely far from a short.
TPSU16 and TPSD28 were both around 220K
The rest were all a few meg ohms. A few with creeping values.
Only hitch I found, TPSU18, wasn't registering as a ground. I ended up measuring off the metal surrounding the screw point.Last edited by andrewnelles; 03-20-2014, 05:11 PM.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Will check out the buffers, thanks again.Last edited by andrewnelles; 03-20-2014, 04:19 PM.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Went through the IGBTs you listed, definitely some issues there. Most checked out ok, but a few were giving what appeared to be abnormal values, and a few shorts encountered.
I need to get this TV up and running asap, so I'm just going to buy a used working SC board off ebay. Hopefully that squares it away.
I had some more time I'd experiment with a repair.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Thanks for your help!Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
I was thinking the shut down after awhile might be normal as well, probably detected nothing was hooked up.
SC2 creep up to about 6K and then slows to a halt. If I lift up and recheck, it has crept down a bit, and returns to climbing.
Q661 gives me the following
G-E = 11ohms
E-C = Short
G-C = 11ohms
My meter is an older Tenma portable meter. 72-045 is the model.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Thanks for the quick reply. Measuring across the 2 pins at SC2, I get about 2K ohm and it rises about 1K per second after that. Similar results across P2.
With P2, P11, P35, and the 3 ribbons disconnected. It will power up just fine, and stay on for about 20-30seconds, after which it shuts down and gives me 4 blinks.Leave a comment:
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Re: Panasonic tc-p50g25 10 Blinks
Alright, SC2 is measuring 0hms to the chassis. With the cable disconnected, Pin 3 on P2, the corresponding link on the PBoard, is also measuring 0 ohms.
If I power up with only the SC board disconnected, I get 7 blinks. If I power up with everything connected, it's currently giving 10 blinks.
Does this 100% confirm that the SC board is faulty? Is there anything I can test presently to confirm the the rest of the boards are healthy? Especially the P-Board?Leave a comment:
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Panasonic tc-p50g25 10 Blinks
Dug through some old threads on this, but didn't find anything identical to my situation. I've got a Panasonic tc-p50g25 that failed over the weekend.
It failed to power up and initially gave 4 blinks as the error, however it shortly after switched to 10 blinks, which is where it has remained. Unplugging/resetting had no effect. Neither did 12hrs of unplugged idle time.
I've removed the back panel and visually inspected all caps. No visual problems there.
Based on previous threads, I checked the following:
On the P-Board no shorts measured on... -
Re: New Members - please post your introductions here
Hello, I often find myself doing component level repair of my devices. This seemed like a great community to join.
-AndrewLeave a comment:
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