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On this page I found listed under "Software & drivers" the Firmware Upgrade Software 42PF7220A/37 v1.5.0.0
I downloaded the compressed file and extracted it to a USB Flash Drive. After you extract the file you will have 2 files...."autorun.upg" and a "readme.txt". Print out the readme file the delete it off the USB Flash Drive Make sure the USB Flash Drive has only one file on it (autorun.upg)
Then just follow the instructions from the "readme" file.
On this page I found listed under "Software & drivers" the Firmware Upgrade Software 42PF7220A/37 v1.5.0.0
I downloaded the compressed file and extracted it to a USB Flash Drive. After you extract the file you will have 2 files...."autorun.upg" and a "readme.txt". Print out the readme file the delete it off the USB Flash Drive Make sure the USB Flash Drive has only one file on it (autorun.upg)
Make sure the TV is turned off.
Put the USB Flash Drive in any of the USB ports on the TV.
Turn the TV power on with the Power Button on the righthand side of the TV.
The TV will display an Update screen.
Let the TV run through all 3 processes.
Turn the TV off and remove the USB Flash Drive.
Power the TV back up.
Hopefully the Updates fixed the problem.....
I think its something on the picture frame board or on the line output board. I would sway to the line output simply because I think but not sure that error code is linked to the line output stage plus when you unplugged the cable the voltage seems within parameters. Good luck.
A tech will need to come out. When the tech do come out have him unplug the Y main and see if the led goes solid greem if it does have them replace the Ymain and the Y upper/lower boards. Most likely that will be the problem.
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