Westinghouse WR59UT4212 panel issue

Went to turn on the garage tv, not often used. The tv backlight comes on, and the sound works, but there is no display.

I completed the normal trouble shooting of restart and reset. I then did the single ribbon cable test for TCON board. There was no change.

As a Hail Mary prior to recycling the TV I have replaced the TCON and main board. There is still no change.

I believe the panel to be cooked, but I feel bad trashing a 14 month old 60” TV. Any last suggestions for repair?