Hi,my Healthrider HCTL71830 R65 was stuck in DEMO mode, I've try to turn it off by press the speed button down but it's not working. Thanks for your help.

SOURCE: Archos 605 is stuck in Demo mode

Should be the same as it was for my archos 604, try my instructions at
http://thepoetrydude2.blogspot.com

SOURCE: Sony HCDX1 STUCK IN DEMO MODE

I don't have a Sony HCDX1, so if this doesn't work, please do not rate me down.

Push the PLAY and STOP buttons (at the same time) and hold them for about ten seconds. This should get you out of DEMO mode.

Power the unit off, then back on. If the display now says LOCKED, then press the PLAY and STOP buttons (at the same time) again to unlock.

If this does work, please rate it Solved, so others can use this solution. Thanks!

SOURCE: Aiwa CDC-X504Mp stuck in demo mode

This recently happened to my Sony, maybe it will help u

If this cd player has a removal fascia then try..

Carefully inspect the the electrical contacts on the fasica and the cd player. If it has got dirt on them then CAREFULLY CAREFULLY clean with cotton swab dabbed in cleaning Alcohol.

SOURCE: stuck in demo

I had the same issue and was about to give up.
cleaning, key combos and such didn't work out.

Solved the dirty way, as described some comments above:

"Just took the faceplate from the "push-menu" button and hit it against a hard surface [not too hard but not too soft hits] and thats it, it worked again."

ah, the good manners!

SOURCE: 42" LG 42LC7D LCD TV stuck in demo mode?

Did you have any luck? My LG is stuck in demo mode too. Menu button doesn't work, and keylock was on as default so I can't use the buttons on the TV itself.