Summary: Panasonic TC-P65VT50; 3-blink; 3.3v SOS D board (may be A board?); cannot find diagrams online to ID boards on my model tv; online parts suppliers I found do not even list this model TV; haven’t opened it up yet to inspect; Toast?
Wow! Do these things have an end-of-life timer on them????
Like Phredrick42: “I have a Panasonic TC-P65VT50. It has worked like a champ for just shy of 7 years.” Well, maybe 6 years but I haven’t looked for the sales slip yet.
Last night ours would not come on and displayed the 3-blink red light. I unplugged it and tried again a couple of times, and tried holding the power button on the TV >30sec (not sure this does anything). Same results.
I spent over an hour online researching and 3-blink = “3.3v SOS D board.”
found one reference that said 3-blink is ‘A’ board
Found one reference that said 3-blink could be triggered by any board receiving 3.3v
even list this model TV
Cant find online diagram for board placement for this model TV
I wish I had one of these covering my model!: https://www.werbemousepads.de/pdf/10th_Gen_PDP_TG.pdf
If I open it up, I will see how similar my TV is to that training info.
Edit: I did find Panasonic has a lot of parts at https://panasonic.encompass.com/model/MSCTCP65VT50
I haven’t opened it up yet but figure I’m down to doing that and looking for burn marks and swelled caps on any board.
Edit: And measuring voltages at any marked test points under power.
Also considering actually calling Panasonic service and see what they say. Edit: I did and they gave me link to find local repair place. Their line was busy so I posted a message on their website if they could answer question: will it cost more than $150 to repair.
I suspect my next posts will be “how should I dispose of it” and “What should I buy”
To grasp at straws: any suggestions on further troubleshooting or specific data for this model?
Edit: I figure on not risking more than $100 on a DIY repair attempt at this age TV.
FINAL EDIT: I found the correct "service manual" free on a Russian technical forum and registered and downloaded it (im sure im on an NSA list now!). It has schematics and block diagrams and labels various wires Blink 11, Blink 8, etc. But there is NO Blink 3 line I can find. I sent webmail to the Panasonic-designated local repair shop asking if there is any way to get an upper bound for repair cost based on blink description - so far no answer. After mulling it over and considering age, and my time to attempt repair, I put that broken Panny on Facebook marketplace FREE. And I went and bought a new LG OLED C9 65". So I fixed the problem!