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KEhrhardt replied to Panasonic TCP50S30 failures

in Troubleshooting TVs and Video Sources

10-21-2016, 12:39 PM
Re: Panasonic TCP50S30 failures

Update. Now have both TCP50S30's up and running, beautiful pictures. Replaced the SU/SD pair with a set from AliExpress and all is well. Have extra set of boards SC, SD and SU. SD is good, SC and SU need repair. Waiting on parts for the SC board. The SU is failed but does not show any shorts to VFG. Actually all pins from VFG to ribbon cable connectors are .780 nominal with red lead on VFG and black lead on ribbon pins in diode mode. Perhaps one of the surface mount caps on this board is blown, not sure. The AliExpress boards were AB...

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KEhrhardt replied to Panasonic TCP50S30 failures

in Troubleshooting TVs and Video Sources

09-22-2016, 10:27 PM
Re: Panasonic TCP50S30 failures

Yeah ran the isolation test with the jumper on SC50 and it is the SU board, SD board is okay. However I have rung out the connectors on that board over and over and cannot find a short to VFG. You are correct that the 2nd chip from the top was replaced by oleg_yj on eBay last yr and the set ran for about 6 months before it failed again. Also checked the resistance on SU41 and it looks good. I'm at a loss. Maybe send it back to oleg for evaluation.

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KEhrhardt replied to Panasonic TCP50S30 failures

in Troubleshooting TVs and Video Sources

09-22-2016, 06:53 PM
Re: Panasonic TCP50S30 failures

Looks like I have fixed the 14 blinker SC board. Replaced 4 blown 30F131's with the FD4536 parts. The diodes showed shorted at first, but once the 30F131's were removed, I checked them again and they were fine. The TO-252 DPAK for the IGBTs is slightly smaller than the DPAK2 but easy to work with. Getting excited now. Now if I can just figure out the SU and SD card problem, it should be another working set. B-)

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KEhrhardt replied to Panasonic TCP50S30 failures

in Troubleshooting TVs and Video Sources

09-20-2016, 08:50 PM
Re: Panasonic TCP50S30 failures

Update on this 7 blinker set. I found a 14 blinker 50S30 on Craigslist for $50. The Craigslist set had a bad SC board (shorted SC2). Swapped the buffer boards out of the Craigslist set into my 7 blinker set that I put a good SC board into and worked in bypass mode. My 7 blinker 50S30 now works! Woohoo.

So the original buffer board set still has an issue. Still no shorts from the connectors to VFG. More work to do.

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KEhrhardt replied to Differences in Panasonic plasma SU/SD scan boards

in Troubleshooting TVs and Video Sources

07-28-2016, 12:24 PM
Re: Differences in Panasonic plasma SU/SD scan boards

Found out the following doing some research:

50U50 uses plasma array MD50F15C3A
50S30 uses plasma array MD50F14C3A

So it seems the 50U50 is 15th gen and the 50S30 is 14th gen.
Both are 1920x1080 FHD plasma arrays.

Looks promising so far...

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KEhrhardt replied to Differences in Panasonic plasma SU/SD scan boards

in Troubleshooting TVs and Video Sources

07-28-2016, 08:31 AM
Re: Differences in Panasonic plasma SU/SD scan boards

The boards look very similar as far as the chips, connector layout and mounting holes are concerned. The 50U50 and 50S30 are both 1080p plasmas arrays. I ordered the SU/SD pair from the 50U50 since they were a cheap working set. Will go over them when they arrive next week.

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KEhrhardt started a topic Differences in Panasonic plasma SU/SD scan boards

in Troubleshooting TVs and Video Sources

07-28-2016, 07:49 AM
Differences in Panasonic plasma SU/SD scan boards

I was wondering the differences between the various Panasonic plasma SU/SD board combinations and if any are interchangeable. For example I have a TCP50S30 that has the 5336/5337 SU SD pair, but I have seen the TCP50U50 using the 5674/5675 and wonder if they could be used as a replacement for the 5336/5337. Thoughts? Anyone done this already and willing to share?

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Last edited by KEhrhardt; 07-28-2016, 08:02 AM.
KEhrhardt replied to Panasonic SC Board - BAD 30F131 IGBTs

in Troubleshooting TVs and Video Sources

07-21-2016, 01:19 PM
Re: Panasonic SC Board - BAD 30F131 IGBTs

AliExpress seems to have the IRG6S320U (10/20 pcs), but the web site claims Free Shipping! and then charges DHL rates for 3 to 7 day delivery.

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KEhrhardt started a topic Panasonic TCP50S30 failures

in Troubleshooting TVs and Video Sources

06-15-2016, 09:25 PM
Panasonic TCP50S30 failures

Hi I'm new to the forum.

I have a Panasonic TCP50S30 that has the 7 blink problem.

Previously I had a failure on the SU board and had a driver chip replaced by someone on eBay. SC board was okay and the repaired board worked for around 6 months and then I got the 7 blinks again. When the SU board failed previously, I had a direct short from the panel ribbon cable connectors to chassis ground and I was able to trace it back to the affected driver IC. So I knew which board failed.

This time I have no shorts from the SU nor SD ribbon cable connector pins...

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Last edited by KEhrhardt; 06-15-2016, 10:18 PM.
KEhrhardt replied to New Members - please post your introductions here

in Announcements & Related News

06-03-2016, 01:41 PM
Re: New Members - please post your introductions here

Hi, I'm a new member from Enfield, CT. On the forum due to my Panasonic 50" Plasma TV blowing up for the second time. First time was SU board, sent it out to be fixed, worked for 6 months. Then it failed again, I believe it to be the SC board now. Sent that out to get fixed, blew up again when reinstalled. Looking forward to learning about these Panasonic plasmas. Thanks for a great forum.

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