I have an old PV-M2037 TV/VCR combo and have somehow "locked" the VCR. I was trying to find out why the TV would turn on all by itself at odd hours and must have pushed the wrong combination of buttons (there are precious few as it is on the remote), and now every time I try to do anything but eject the VHS tape, the red message, "VCR Lock Activated" beeps at me! Help!