Denon 9000 has problems reading dvd discs.  Plays fine for an hour or so then skips.  changing discs does not help.  Must let system cool down and start over

The lazer is not reading the disc, It is shot.

This is going to be a bit long -- but very detailed, so please read it carefully. There are several reasons that an xbox 360 system will have problem reading discs. The error messages also vary from unreadable disk, no message at all but the game skips, "please insert disc in a 360 console" to "open tray." There are a few reasons this may happen:

1.Bad disc. Check the back of your disc for scratches. If it looks good (or plays fine in another console), then the disc is probably fine. Also-- try more than 1 game to be sure.

2. Bad laser. The XBox 360 has a DVD drive very similar to a PC's DVD drive inside. The drive contains a bunch of parts including a few motors and gears and a laser.The laser is the part that actually reads the disc. The reality is...with all the hours and hours of game play, lasers do eventually wear out. The laser isn't very easy to replace, but it is replaceable. You can find any and all XBox 360 lasers at the following website:

http://store.richspsxparts.com/xb360ac.html

3.Bad DVD Drive. Sometimes other components inside of the DVD drive can become bad such as the motor that spins the disk, the motors that open the tray, etc, etc. You can get a new DVD drive to just replace everything,including the laser, in one shot but there is a catch. The XBOX 360's DVD drive is tied to the motherboard using a software lock.The easiest way to overcome this lock is to buy the exact same manufacture DVD drive that is in your system now, remove the circuit board from the old DVD drive (which contains the software key) and transfer the circuit board into the new DVD drive that you purchase. If you do this simple procedure, there is no flashing involved. The following website carries DVD drives and also provides instructions on swapping the circuit board from the old drive into the new one.

XBox 360 parts: http://store.richspsxparts.com/xb360ac.html

DVD Drive Swap Info: http://store.richspsxparts.com/imnooninxb36.html

This is going to be a bit long -- but very detailed, so please read it carefully. There are several reasons that an xbox 360 system will have problem reading discs. The error messages also vary from unreadable disk, no message at all but the game skips, "please insert disc in a 360 console" to "open tray." There are a few reasons this may happen:

1. Bad disc. Check the back of your disc for scratches. If it looks good (or plays fine in another console), then the disc is probably fine. Also-- try more than 1 game to be sure.

2. Bad laser. The XBox 360 has a DVD drive very similar to a PC's DVD drive inside. The drive contains a bunch of parts including a few motors and gears and a laser. The laser is the part that actually reads the disc. The reality is... with all the hours and hours of gameplay, lasers do eventually wear out. The laser isn't very easy to replace, but it is replaceable. You can find any and all XBox 360 lasers at the following website:

http://store.richspsxparts.com/xb360ac.html

3. Bad DVD Drive. Sometimes other components inside of the DVD drive can become bad such as the motor that spins the disk, the motors that open the tray, etc, etc. You can get a new DVD drive to just replace everything, including the laser, in one shot but there is a catch. The XBOX 360's DVD drive is tied to the motherboard using a software lock. The easiest way to overcome this lock is to buy the exact same manufacture DVD drive that is in your system now, remove the circuit board from the old DVD drive (which contains the software key) and transfer the circuit board into the new DVD drive that you purchase. If you do this simple procedure, there is no flashing involved. The following website carries DVD drives and also provides instructions on swapping the circuit board from the old drive into the new one.

XBox 360 parts: http://store.richspsxparts.com/xb360ac.html

DVD Drive Swap Info: http://store.richspsxparts.com/imnooninxb36.html

dirty lens, look for a DVD lens cleaning kit

Check your formatting on the DVD recorder, you need to finalize the disk to be playable on "any" player. That should solve the issue. Your JVC is looking for specific code as it reads the disc, when it's missing or not understood by your JVC it will either stop play or skip over it's interperated missing info. Hope this helps

The laser lens would have got repaired inside. Please change it.IT will read the dvds. It cost about 25$ i suppose

with some models it's very sensitive to being level. try moving your dvd player to a common flat area. see if it's a little rocky or placing a single piece of paper under one of the corners...I had a dvd player that would freeze on every disc and since I moved it to the botton of the cable box it no longer locks up. Worth a try.

it sounds like you have a heat problem,try to put your player somewhere that it has alot of room to keep cool,i've noticed some people put there players on top of the t.v. or close to other electronics,the whole key is keeping things cool,let me know if this helps because you have a very good player.

Our started doing the same thing about a week after the warranty ran out. It has to do with the alignment of the discs being loaded. here's a work-around that works for us:
Open the tray
Choose which disc you are going to watch and use the Change Disc button to push the selected disc to the back (ie, if you want to view Disc 1, discs 3 and 4 will be visible in the tray).
Look down the center holes of discs 3 and 4... manually move your tray left-or-right to align the holes with the tray.
Push the Direct Play button on the top right of the unit for your disc of choice (Disc 1 using the example above).

hope that helps... I've searched for a while and played around with the unit (with and without the cover on) trying to figure out a way to re-align the tray, but no luck.

--JeD

have same problem, get dvd error message "disc error unable to read disc