Home Theater Questions? Ask a Technician for Answers ASAP
Hello, Sorry you're having problems. Offhand the numbers and letters appearing on the screen are showing the software version of the set generated by the mainboard. This generally only occurs when the software is corrupt and the set requires this board be replaced.
However it's worth it to try a hard reset, as sometimes the processor in the TV can simply have locked up.
The first thing you would try, is disconnect the set from power, then press and hold the power button on the TV itself (not the remote), for 10 seconds and release. Then plug the set back in, and also check that the power cord is connected tight at the TV as well. Press power once, and see if the set powers up normally. Try this procedure up to 2 times, and please let me know what happens.