Found this at pechorin.com Solution: Take a slightly damp cotton swap and clean the moisture sensor. Remove power from the camera. I remove the battery as well. hold the camcorder on it's side, with the tape door open, lens facing right. In the back of where the tapes go, on the left side is a silver component. It's just behind a metal roller that hangs down from a plastic piece over the head. The silver component in question is in the rear left corner, with some orangish plasticky tape above and below. You almost can't see the small black sensor square on the right side of the component. May help to have a second pair of hands hold a flashlight in place. If you look behind the roller diagonally across where the tape goes, you can see a black square on the right side of the silver component. Clean this (gently!) with a moist cotton swab. The swap should get a bit of black gunk off. I'd recommend cleaning it with a dry swab next to remove any moisture. Wait a minute or so to be sure it's dry. Then re-apply power. You should not see a false consensation message for a long time. ;-)

I finally managed to get the condensation thing to go away.... I stuff the compartment with that silica gel you get with electonics packaging... left it for a few days and presto.... Unfortunately now I have another problem.... the rails are out of alignment.... I swear if this thing wasn't so cheap... I'd give up and buy a sony!!!

!!! i fixed it u wanna know how, ok well what you do is...................................................................................................................... bah!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! well ya cant, but mine works.. ahh yeee ur is probably stuffed coz, ur an foolish person!! ahh yeee

Ive got the same problem with the JVC GR-D22U. it started doing the condensation crap right from the start, if you find any good info about how to fix it could u let me know? thanx wayne