Our DMR EH-55 just stopped reading or recording to DVD's. The hard drive works, it will record, but I can't get it to copy to a DVD. I will put a DVD-R in and it will show as unrecordable. I first put in a DVD cleaner DVD to see if that might be the problem, but it won't even play. I have had it a long time but don't really want to go to another brand which I would have to do, as Panasonic isn't making these available anymore. Does anyone have a clue as to how I might be able to open it up and look for any obvious problems? Also, I haven't updated the firmware in awhile and the new stack of DVD's that I started using (coinsidently when the problem happened), are "up to 16X" speed.