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Re: Yamaha CDC-705 Parts
Here is one of many sources.
Don't bother with the part numbers, just order according to the
measurment of your old belt minus a little. It isn't critical,
but they are cheap, get a range of sizes if you want to be sure.
Hope ya fix it!
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How old is the DVD player? I have a Yamaha 5-disk player and the rubber drive belt that wraps around the drawer motor and connected to the pulley for the drawer was stretched out and useless. Just bought a new one online and voila!
Part Number VQ776900. I got it online for 99 cents but other places can be up to 7-8.00 dollars. I removed 5 screws on the sides and rear of the case. Took case off. Press the open button and help the drawer open with your hand while the motor tries to. Then remove old belt with pliers or paper clip, etc. I did not take anything apart on the inside to replace the belt. Push the belt into the player over the larger wheel and then I pulled the belt with a paper clip over the smaller drive wheel.
Call Yamaha parts: (888) 892-6242, Monday through Friday, 7:30 am to 5:00 pm PDT. I got an answer right away. I also bought a service manual off Ebay so I could get the part number. The belt for the tray is VQ776900. $2.18 ea., but shipping was $7.95 (UPS), so I ordered three belts.
Any decent repair shop should have a large supply of replacement belts. The Part number isn't necessary. Just take the old one in and get a new one just 2mm smaller than the original. Some repair shops won;t sell them because they don't want you repairing your own property but a decent shop should sell you one.
See if the tray motor drives a belt to move the tray, if so, check if the belt is loose or broken and replace if necessary.
You can find replacement belts in electronic part stores and on internet, you need to measure the diameter of the circle that the belt forms so you'll know what to purchase, but keep in mind that the new belt will be of a slightly smaller diameter than the used one).
Also check the tray homing switches for dirty contacts or physical damage and clean/replace if necessary.
These switches are usually of a touch contact type (something alike relay contacts that are being pressed to make a contact when the tray is in either of the extreme positions - open or closed).
It may as well be something else like tray motor control section, loose wires or connectors, physical damage to any of the tray drive gears or other tray parts, a stuck/obstructed gear... i only described two of the fairly common problems that often cause the tray mechanism to fail or malfunction.
I bought one of these units from a flea market for $5.00. It said the tray wouldn't open. I picked it up, and noticed the same thing you did. Humming motor, but the tray stayed put.
I opened it up to check things out, and all that was wrong was a (very) stretched out belt on the pulley that opened the tray. I replaced it with a rubber band and it has worked ever since. Once the rubber band wears out I'll replace it with a proper belt, but for now, it was a 2 minute fix that's lasted around 11 months so far. I really, really like this player, and plan to keep it working for a long time!