Try this from..
http://forum.ecoustics.com/bbs/messages/2/68837.html
To "unlock" your Proscan VCR you press and hold (maybe ten seconds or so, or until the VCR goes back into "normal" mode) ONE of the following buttons, On/Off, VCR1 or VCR2 (depending on which one you are using). That's it!!
This is a "feature" call Protection Plus. It locks out the VCR from outside influences such as kids when you are using the timer recording feature, or for anytime you want to "lock" it out..
Cobweb
October 2005