Re: 14 blinks TC-P50ST30
Got the repaired board and installed it and the TV powered right up. Working great! I made sure to tighten every screw on the back completely, and scraped away any buildup from the mount points. Thanks for all of your help!
macnbaish
Member
Last Activity: 03-09-2017, 05:52 PM
Joined: 10-16-2014
Location: Nicholasville, KY
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Re: 14 blinks TC-P50ST30
Picture of the screws are attached. The ones with the washers are only used where the su/sd boards are stacked on top of the sc board. All other sc board screws are the smaller ones with no separate washer, just a wide head....Leave a comment:
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Re: 14 blinks TC-P50ST30
Forgot to mention - when I took the board off one of the mounting screws was very loose, barely touching the board at all I think. I'm guessing this may have been the cause of the failure. I'll be sure to check and tighten all screws when I put everything back together.Leave a comment:
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Re: 14 blinks TC-P50ST30
Personally I think this is a conspiracy by Panasonic to make me look foolish lol. I went to the main site, clicked support, typed in "TC-P50S30". No results. Typed in "TC-P50ST30", came right up. It's funny, I even went to the "find your model" tool, and it suggested TC-P50S30 so I thought I finally had it, but as soon as I selected it it took me back to the results page - with no results still. Maybe it's because I'm getting the U.S. version of the site? Makes me wonder what the heck is going on. I bought it from Best Buy in...Leave a comment:
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Re: 14 blinks TC-P50ST30
Yep, mine shows a 1 when it goes out of range, so I feel confident the buffer boards are ok. Picking out a new meter now for next time. I never realized how crappy mine was until this.
A couple more questions for you if you don't mind. Like some other posters, my TV has no fans, although the back panel has vent holes that appear to be intended for fans to be mounted in there. I guess maybe they were cutting corners? Would it help extend the life of the unit to try to add some active cooling?
Also, I was curious about newer firmware...Leave a comment:
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Re: 14 blinks TC-P50ST30
My crappy meter doesn't even have a continuity buzzer, but I ran down all the buffer ribbons with it set to 2000k and it never budged off of of scale high so that looks good to me. I see Shop Jimmy is out of the 5351AM replacement boards so I guess modus link is where to go next. I appreciate all the help, sorry for my brain farts there. Oh, and I'm now on the lookout for a nicer multimeter.
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Re: 14 blinks TC-P50ST30
I think the lightbulb has gone off that what my mind was thinking for "short circuit" was actually the opposite. SC2 has had zero resistance across its pins since the first time I checked but for some reason my brain was thinking a "short circuit" was infinite resistance. ugh
So reading back I think you're saying if SC2 is shorted that's a sure sign of a dead SC, so I guess that's confirmed. Should I be shopping for a better meter to determine if the SU\SD boards are bad too?Leave a comment:
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Re: 14 blinks TC-P50ST30
Went ahead and tested every pin on SU41 with my meter which tops out at 2 meg. Tested against ground.
SU41
1 - 9 are all off high
SD42
1-9 are all off high as well, although 6 started in the low hundreds k and ticket up over 2000 and off scale.Leave a comment:
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Re: 14 blinks TC-P50ST30
Set meter to 2000k and number 2 pin on sd42 is still off scale high, so not sure what's going on there. SC2 connection shows zero resistance across its pins. Should I check each pin to ground as well? I also measured resistance of TPSC1 and VF-5V again, no matter what connections between boards I am reading 137k on TPSC1 and 2.66k on VF-5V. Slides don't say what normal is, so I'm not sure.Leave a comment:
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Re: 14 blinks TC-P50ST30
Well it turns out some of my newbness with my multimeter was showing. I had it set on 200 ohm. Unfortunately it caps out at 2000k which I'm assuming would be 2 Meg. At that setting I was able to see one of each connector start with a resistance in the low 100s k and then increase until it went above 2000k and off scale. I was expecting to be able to see the 221k one you mentioned but that one showed off scale all the time. I am supposed to be testing the pins on the sd and SU side, correct? Maybe I have a crappy multimeter...Leave a comment:
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Re: 14 blinks TC-P50ST30
Ok, here is what I have found. I downloaded the Training manual, and performed the procedure on slides 71 and 72. No matter what I get a short on both TPSC1 and VF-5V. Slide indicates that means bad SC board. I then went ahead and did the buffer board pin tests you asked for. Disconnected all connections between SC and the SU/SD boards, plus the ribbon between SU/SD. I got a short on all pins on the SU41 and SD42 connectors. Is that what's expected? I wasn't expecting that so I started questioning if I was doing it wrong. However I get continuity just fine...Leave a comment:
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Re: 14 blinks TC-P50ST30
Hello, I have a P50S30 that is not quite three years old yet, here is the background:
About a week ago it started having an issue where the screen flickered in an odd way, especially before the set got warm. It's hard to explain the flicker, it's like the colors would fade out in certain parts of the screen. Well yesterday my wife goes upstairs for a few minutes with the TV on and comes back down and the screen is black. Power LED is on but won't respond to anything. After pulling power and holding down the power button we got 14 blinks....Leave a comment:
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