Yamaha dvr-c300 dvd playeer

The unit is connected by small set of gears that push tray /disc out. As tray comes out it either pushes disc out of slot or pops open door (depending on which style of face you have). If you have kids I would not be surprised if something is caught in between disc and face or jamming edge of door. (know this from own experience). The face of player can usually be carefully popped off by gently prying at corners. If you get face off you may be able to see if something is stuck in unit that does not belong, or see if a piece is broken loose near face. If unit has door that opens you can try using a slim but stiff piece of plastic and keep tension on door with plastic while hitting eject button. On some units there is a small hole on face that is manual release that ejects disc - even if no power. Usually takes a long straight push in hole (straightened paper clip or dental pick) and it manually pushes gear set to go out. So many of these units are different but most do have a manual release. Check owners manual to see if it shows a picture of face and possible release hole. Have had kids fight over changing a disc and pushed in on it while it was ejecting so it stripped gears, and had kid hang on ceiling mount unit that tore screen totally off. I feel your pain....

f the tray won't open or close properly, check the belt for dirt or wear. Then check the tray for misalignment. If needed, remove, clean, lubricate, and reinstall the tray following the instructions in the owner's manual.
God bless you

Mechanical timing and alignment is the problem of your dvd player.
This comes when you accidentally force the disc tray to close.
You need to open the cover of the dvd player..take out the dvd mechanical loading system try to eject it manually by turning the gear with your hand.
Make sure that the cd loader reaches the limit switch before it closes. This will return back the right timing and alignment.

Did you find a solution? I have one to and the disk tray is misaligned and I don't know how to fix it...and I have no info showing on the digital screen..other buttons don't work..so I don't know if I have to reset the machine...could you tell me how to rest it?

Try inserting a small pin through the hole beneath the insertion cabin, after pressing the eject button. If you don't have such a hole, Push the eject button and tap hardly on the top of the player. The drive will come out in two or three attempts.

Apart from taking it apart! or forcing the disc tray out "DON'T" !!! try switching off at mains holding eject button continuosly pushed in and put mains back on, sometimes this causes a full "re-boot sequence" which from experiance and several attempts, does throw me the tray open!

I fixed this by jerking the tray gently. Someone jammed my tray and it skipped a few gear teeth. It seemed like the machine couldn't pull it in far enough to reach its preset position. So I let it close and when it was almost closed, I gently jerked it out to skip the gear teeth back into alignment. It is kind of tricky because the motor will just reverse instead of skipping teeth (you'll hear the plastic clicking when it skips). Perhaps unplug it and slowly push it in manually then **** it back out softly. Just be gentle. Good luck.

You must take off the top of the unit and remove the disc from dvd tray. Take out the screws from the unit holding the top cover on and check the dvd tray for obstructions.if you find none then try to gently move the tray forward through the door and get you dvd movie out. Then check the mechanism for faults such as clogged gears or a broken belt or bad guide rails. You sholud see some problem in the disc carriage area.Try to repair it and test the unit with the cover off, so you can see if the fault is mechanical or electronic.If it is electronic they you should check the circuit boards for bad connections. You may find a bad wire connector or something loose.If all this fails to reactivate the dvd, then take it in to a service center and have them check it out for you. Hope this helps you with your problem.

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

Perform an optical alignment...accordianman