Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Any word on how it holds up after being fixed? Do people have better luck now with the locking washers?
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Yeah basically. When I put the new SC board in my father in law was helping and I guess he overlooked it as well. Yeah I'm glad they accepted it anyway. To be fair they didn't specify that I couldn't have attempted repairs, just that they wanted the core board. Maybe they'll change their description lol. I kind of wish my father in law didn't attempt repairs and just let me send it in to get repaired, would have saved me $40 but oh well, it's working now....
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
It works now! The new SC card worked, my father in law and I neglected to put in the four large screws connecting the SC card with the SU and SD cards. I can't believe we missed that, but I blame that on neither of us having done this type of troubleshooting before.
I'm going to send back the power and subpower boards for a refund from the seller.
Thanks for all your help on this issue!Last edited by Ben09; 08-11-2015, 06:30 AM.
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Update: I heard back from the seller. He said he tested it in a unit successfully before he sent it, and to make sure to check my SU and SD cards. He said my old SC card caused one of his SU cards to short out, but that might have been because my father in law removed a couple components.
I really hope one of those is the problem. I'm just about ready to sell this off board by board and get a new TV.
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
According to this Shop Jimmy video, I checked the voltages of the TP82 and the other one and they didn't come up correct. I was reading the voltage is wrong. This morning I checked and the other one correctly read 5 volts. The other one, the TP82 only said 1 volt unless I'm measuring it wrong. I already tried swapping the power board out with no difference. According to this video, the a board would be the next step. But the flow chart you posted indicated that it 8 blinks after disconnecting SC20 was still an SC problem....
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
TV is getting 6 blink error code after replacing SC instead of 7. I replaced the power board and sub power board with no difference. I will be sending those back to that seller. Could 6 blinks still mean SU or SD? Or is it the A board?
According to the service guide, it says it's either the SC board or A-SC FPC whatever that means. I couldn't find anything on Google about thst....Last edited by Ben09; 08-03-2015, 06:08 AM.
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
We actually ended up ordering a different one on ebay from a good seller and sending the old one back so I know the card is working. Is the A board more suspect than the P board? I checked these two places on the SC card where one is supposed to read 15 volts and the othe 5 volts, both show 0 volts. That is supposed to indicate it's the power supply.
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Got the SC board back today. Now it doesn't power on and has 6 blinks. Diagnosis YouTube with Shop Jimmy says it's the power board since we get no voltages from the two places to check on the SC board when powered on. So I'm at a crossroads. I could pay another $100 and get the p board and maybe get another couple years out of it. Has anyone repaired them and had them last? I want to know if it's worth it to repair.
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Re: Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Thanks for the replies! I'm glad to know it is the SC board that needs repairing. I read about how to test with a multimeter if the SU or SD board is failing. I'll make sure to do that before I put the SC back in.
Also, thanks Terry for that idea. I will have him check those before replacing.
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Panasonic TC-P55GT30 will not turn on, seven blinks from LED
Hi,
I just joined the forum to get help on this issue. My Panasonic TC-P55GT30 was on and working perfectly a little over a week ago. When I went into the other room and came back, it was shut off. When I unplugged it and plugged it back in, I got the seven blinks from the LED. I unplugged it for 24 hours, plugged it back in and got the seven blinks again. I chatted with a Panasonic rep online, who told me to hold down the power button while plugging it in. This also did not work.
I ordered the SC card repair kit from ShopJimmy and my father in law is currently looking...
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Re: New Members - please post your introductions here
Hi,
I'm a new member on this forum. I joined because I got the dreaded 7 blink error code and my Panasonic TC-P55GT30 will not turn on. I'm looking for solutions on how to repair it so I don't need a new TV.
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