panasonic tc-p50s60 bricked after firmware update?

[tw2005]

Re: panasonic tc-p50s60 bricked after firmware update?

The new mainboard came with a long white sticker reading TXN/A1USUUS. However, the old board has no such sticker. They have Panasonic's suffix grid and the jumpers are in the same location on both boards. The new board even has the suffix written with a black sharpie on the board above TNPH1046 (UB).

It's the right board

[mushchampion]

Re: panasonic tc-p50s60 bricked after firmware update?

The new mainboard came with a long white sticker reading TXN/A1USUUS. However, the old board has no such sticker. They have Panasonic's suffix grid and the jumpers are in the same location on both boards. The new board even has the suffix written with a black sharpie on the board above TNPH1046 (UB).

[Moreno83]

Re: panasonic tc-p50s60 bricked after firmware update?

Is the suffix sticker exactly the same as your old mainboard? It is a white sticker with "TXN/A..... "

Maybe you just checked the TNPH number only.

[mushchampion]

Re: Panasonic tc-p50s60 bricked after firmware update?

Update : I Received and installed the new A-Board. I plugged in the TV expecting my problems to be solved but alas now the LED is blinking 6 times.

So after consulting all the documents I previously gathered

I was hoping it would be just a loose connection on the A-board I just installed, but after rechecking all the ribbons and connections everything seems to be properly connected.

When I was removing the ribbon connections from the old board one of them took a bit more force than the others to come out, resulting in this :

(click to zoom, then expand to actual size)

I don't know if that could be causing the 6 blinks or not, it doesn't look especially damaged to me, but idk if minor scrapes/dents in those ribbons is enough to cause failure.

I went ahead with the troubleshooting flowchart

After disconnecting the SC Board and plugging the TV back in, I still get 6 blinks, but it takes a lot longer(+11 seconds) for the blinks to happen. According to the flowchart that means the SC Board needs to be replaced.

The good news is SC Boards are in stock on multiple websites and go for as low as $30. Finding the A-Board replacement took hours of scouring to find in stock and cost $94.

My concern is if I buy a new SC Board and put it in, will that be the end of it? Will it solve the problem or just present a different one? Do I have to replace the buffer boards (SU and SD) as well?

I guess at least for now I have a real error code to work with

[tw2005]

Re: panasonic tc-p50s60 bricked after firmware update?

An advanced solderer I am not. I'm intimidated to even get the multi-meter out to test Voltages. The Technical Guide I found goes super in depth with a lot of terms I'm not familiar with.

Well, keep the old board just in case you find someone who can or maybe reflash the chip.

[mushchampion]

Re: panasonic tc-p50s60 bricked after firmware update?

If it fixes it and you're confident it's bricked you can order the IC loaded, just a matter of desoldering the old and on with the new. Advanced soldering skils

An advanced solderer I am not. I'm intimidated to even get the multi-meter out to test Voltages. The Technical Guide I found goes super in depth with a lot of terms I'm not familiar with.

[tw2005]

Re: panasonic tc-p50s60 bricked after firmware update?

I've tried, but the screen doesn't come on, so it's kind of difficult. I've inserted the usb stick again while the red light is on, and attempted to put in the correct inputs with the remote to do it again but haven't had any luck.

I recently found a pretty comprehensive technical guide put out by Panasonic's "National Training Department" in 2013 that has all the board lay outs, connection locations and trouble shooting flowcharts. Most signs are pointing toward replacing the main or 'A' board, but I haven't broken out the multi-meter yet. I already ordered the A board so I'll see what happens after I get that.

If it fixes it and you're confident it's bricked you can order the IC loaded, just a matter of desoldering the old and on with the new. Advanced soldering skils

[mushchampion]

Re: panasonic tc-p50s60 bricked after firmware update?

I've tried, but the screen doesn't come on, so it's kind of difficult. I've inserted the usb stick again while the red light is on, and attempted to put in the correct inputs with the remote to do it again but haven't had any luck.

I recently found a pretty comprehensive technical guide put out by Panasonic's "National Training Department" in 2013 that has all the board lay outs, connection locations and trouble shooting flowcharts. Most signs are pointing toward replacing the main or 'A' board, but I haven't broken out the multi-meter yet. I already ordered the A board so I'll see what happens after I get that.

[dick_barton]

Re: panasonic tc-p50s60 bricked after firmware update?

Is it possible for you to try the firmware update again?

[mushchampion]

I was updating the firmware on my panny plasma tc-p50s60, and at the end of the process when the TV prompts me to remove the USB drive, and hold the power button for 5 seconds (the TV is supposed to automatically come back on after this) the TV turned off and hasn't come back on since.

There is no blinking red codes, just a solid red LED. As if the TV is stuck in standby mode. If I hold the power button on the TV in for 5 seconds the red LED will turn off, but as soon as I let go of the power button it comes right back on (no blinking). I've tried hard resets by holding volume - on the tv and menu on the remote, but to get any sort of response for that I have to first hold the power button for 5 seconds until it turns off, then I hold volume- and menu for about 10 seconds and I get a quick burst from the LED of about 5 blinks. After which it just goes back to being a solid red.

I've unplugged all components and power cables and let it sit for over an hour. I removed the back of the TV just to see if I could spot anything out of sorts, but everything looks fine. As soon as I plug the TV back in the solid red LED lights up and the TV won't turn on.

So I've been after this all day long. Any feedback or suggestion is greatly appreciated as before today I didn't know a whole hell of a lot about troubleshooting TVs. I found the service manual online and even found/ordered a new A-Board as that's what I'm thinking is the issue.

Could it just be that the firmware update didn't complete properly and now I've got a very heavy paperweight on my kitchen table for now? The new mainboard was just under $100 and took forever to find in stock.