My vcr lcd reads LOCK now and I can't access any menu functions

I have a PROSCAN PSVR73 VCR plus gold, VHS HQ that worked fine until I got cable the other day and tried to do the set up on the VCR....it said it would take hours and when the LCD read out of DOWN LOAD stopped blinking it would be finished, so I did it overnight. In the morning the LCD read Timmer and taped the program I had set a long time ago, but after taping it wouldn't let me eject the tape or turn the timmer off.... I unplugged it for ten minutes and plugged it back in...now the LCD reads LOCK with dashes where the clock read out use to be and I can't get into the menu to change anything. I left it unpluged last night, but I got the same LOCK display today.... I'm at a total loss with no vcr manual. Does anyone out there know how to get out of this fix? :o Dee