Its a small dented plastic wheel , with another smaller dented wheel in the center that moves the cases of the Bose CD Changer (Pathfinder 2.006), one of the dents has dissapear,no one Knows where to find a replacement.
I have pictures if recquired
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The laser pickup unit [Optical Pickup Unit] is faulty. Bose uses a special type. You can't get it from open electronic spare part market. It is best to get this set repaired by the authorised service center for bose at your town.
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.
Two methods. 1. Remove three screws from each side and the mounting brackets (if applicable). You will have to pull the sides away from the rubber mount vibration dampner things and on the back there s a slot that says "open" where you will need to stick in a screwdriver and gently pry it open. You will also need to push a small screwdriver in the 3 slots on the top and bottom holding plastic clips that secure the front cover. This will let you pull of the plastic front cover. Once you have the cover and the sides and top off, you have to push the 4 spongy rubber supports in toward the unit. They will fit through the little hole. Then you need to carefully remove 2 springs (1 on each side attached at the center/top of each side) that supports the unit weight. Then you should be able to carefully rotate the player toward the back until you are looking at the bottom of the unit. There is still a ribbon cable attached at this point so don't drop anything or it will break. There is a large plastic geared wheel showing on the bottom. spin that wheel with your fingernail to make the CD retract into the magazine. Once it is in the magazine, there is a black small lever on the bottom near the back of the magazine. this holds the spring tension and as soon as you move the lever slightly to the side, the magazine will eject.
METHOD 2. I know all this because my unit died today and I took it apart. If yours is working, I would be willing to pay for shipping to get your unit to Colorado, I will remove your CD's and mail them back to you if I can keep the working CD changer :)
Its power supply system has some trouble. It is best for you to contact authorised Bose service centere, since some critical components are there on their power supply ststem, which you can't get it from anywhere except from them. Moreover, the schematic diagram of Bose equipments are very difficult to get. Never try to repair it by yourself, as it may spoil the set. OK.
My Sony CDX-636 has a mechanisim to lift and lower the CD reading carriage. It consists of a small motor and two nylon gears. the smaller of the gears has stripped a number of teeth which makes the carriage move up and then slip back. I need a new gear wheel. where can I buy a new gear? I am living in Palmdale, california
Try this... unplug the unit and turn it upside down. Have a small screwdriver ready. No plug the unit in and try to turn the wheel in the large slot clockwize. When you see the spring clip try to grab the white plastic stop and move it clockwize. This should eventually open the door. It did for me.
Some bose cd changers have a gear the get cracked and must be replaced. You did not specify which bose you have, so I have told you of the most common problem with the bose 6 cd changers.
If this is in one of the silver slimline type of units, it is very difficult to get them apart if you have not dome it before. The gear is also very hard to get to in the changer. it would be a good idea to let a professional service technician look at it. You will need to take it to an authorized bose service center because bose does not sell parts to any service centers unless they are bose authorized. They just started that about 2 years ago.
I hope this was helpful to you, let me know if I can assist you further.