Any ideas on how to do a hardware reset of a Kenwood D710? Somehow it has gotten into a mode where it is on LOCK mode. Whenever I press a button, it just beeps. I can't do a software reset because I can't get it out of LOCK mode. I hold down LOCK mode on power up to try to get it out of lock mode, but it just beeps at me. Tried removing power (for a while) but it doesn't seem to help. I need this radio this weekend for an event this weekend. Any help is greatly appreciated.