I've searched for "shaking" and "vibrating", read what came up, but didn't glean anything useful.
I've had my 2910 for 2-1/2 years with no problems. I recently came back from an extended trip (3 months), and had my system unplugged from the wall (everything runs through my power conditioner). I put a redbook CD that I've had for a long time into the player and it immediately began shaking & vibrating like a little washing machine, and then it locked up. I repeated with a number of CD's - same thing. I tried multiple DVD's (both movies and concerts), and it plays all of those just fine all the way through with no shaking or other problems.
I confirmed that all settings are at factory defaults. Firmware is ESS 6720-4. For redbook CD's, I use analog out & set my pre/pro on bypass, which is how I've always had it set up. For DVD's, I use component. Nothing has changed as far as cabling, setup, etc.
I spoke with Denon tech support, who said this was not a known problem and suggested trying a lens cleaner disc, so I ran my Scotch laser lens cleaner through it (first time I've done this on this player). No shaking, but at first, it would only run the cleaning track (#2) for a few seconds and then lock up, so I repeated this a number of times and it gradually began to run #2 track longer each time before skipping and then locking up.
I put a redbook CD in and it played for a short time, then the timer began to skip ahead a few times and then it would lock up. Same with the other redbook CD's I tried. There is no longer any shaking or vibrating happening, just playing for a short time, then skipping ahead, then lock up.
I repeated this process throughout the day thinking more cleaning = good, right? But I've had no luck as far as getting a CD to play for a longer time before locking up. And it still won't get all the way through the cleaning track w/o locking up.
Has anyone dealt with this problem? Does it suggest anything? I have an authorized service center in town, but if I can try something else before bringing it in, I'd obviously rather do it before I disconnect everything & remove the player from the shelf.
I’m wondering if having the power cut to the player for 3 months resulted in some sort of ‘reset’ and now I need to change a setting or something? Or that my not ever having cleaned the laser lens has finally caught up with me and needs servicing?
Any ideas? I bow to your collective wisdom...