Vlad,
Actually, having any video displayed is a good sign. At least everything is working, just not correctly.
I'd suggest carefully opening up the Model 3 (lift the top straight up and protect the CRT neck), and have a look at all the IC's that are in Sockets
along with all the cables and anything that could have vibrated loose during the move. Maybe try reseating the socketed IC's.
If you hold down the BREAK KEY when powering on, do you get this same display of characters all the time?
Larry