Dvd tray will not retract and dvd will not load

No there will not be a easy fix for this. You can keep putting up with this the way you have been or buy a new receiver and try to sell this one on craigslist, eBay, etc.

This was a common problem for Toshiba sets a while ago, but was fixed by an engineering change. What is the make and model of your unit? With the power off, try to push in the tray a little bit (DO NOT FORCE IT!!) With the tray partially in, plug in the set and turn it on. The tray should close. If not or if the tray opens fully, then there is a problem with the position switches inside the set. These are small leaf switches that can get dirty or break. On a power up, the tray should retract to the "loaded" position.

Please update this with more details.

Thanks,
Dan

To verify there is nothing stuck in your drive, turn off your computer and try manually pushing the tray in GENTLY and feel if there is something blocking the tray moving. If there is nothing preventing the tray from moving manually push the tray in - start your computer and try it again. Use the eject function in windows explorer and try the retract button again. If teh button will not work try pushing the tray in manually again. Once the tray starts moving in it should automatically retract the rest of the way. If the unit will not retract on it's own by either method then the drive should be replaced.

I think in opening and closing the top case, you have either removed the earth connection or have let the top case metal part in touch with live wire.

You can remove the top and then the front. Now the mechinism is now fully exposed. Check the loading belt. It may be too loose.

This is a work-around rather than a solution. We put an audio CD in the tray and after closing the tray the unit begins to play the music. After waiting a few seconds we open the tray and quickly substitute a DVD and it loads OK. We had also tried cleaning the player to no avail. The CD approach is a pain but it does allow us to play DVDs. Jim

DVD loading mechanism doesn't load completely that's why opens after attempt of loading.
You need to open top cover of unit and inspect loading belt might be lose, tray timing can be out of phase, some wire got stuck with tray while loading etc.

check to see if tray is out of alignmnet ..also check to see if 5 or 7 pin flat ribbon cable form servo drive board to tray got dislodged from connector or is bent,cut etc...

Open up the unit find the load and unload motor on the DVD carriage and turn it manually and this should eject the tray. You may even have to unscrew the carriage to get to the bottom of it to access the load and unload motor.

Solution for Pioneer DV-C36 Multi Disk DVD player - tray door will not stay open.

My player would open the disk tray when the open button was press but when the tray was fully open it would retract
back into the unit leaving no time to change or load disks.
I found a poor connection at the ribbon cable connector was causing this problem. A seven conductor ribbon cable
connects the main unit with the travelling tray. A position switch (S21) senses when the tray is fully extended and retracted.
On my player pin 1 of the ribbon cable connector on the travelling tray was not making an electrical connection which
causes the control system to retract the tray. The fault lies in the connector - the tang was not pressing against the ribbon cable conductor.
I was able to desolder the connector and pull the contact out just far enough to reform the tang with fine needle nose pliers.
This is very tedious and required an eye loupe for magnification.
Tools required:
#1 and #2 phillips screwdrivers
Soldering and desoldering irons (or other desoldering tools)
Fine needle nose pliers.

Remove the tray ribbon cable
1. Remove the cabinet cover - 6 screws. Open the tray. To keep the tray from retracting pull the power cord when the tray is extended.
2. Remove the front bezel from the tray. Gently pry up the bezel by relesing the catches with a small screwdriver. Allow the tray to retract.
3. Remove the front panel - undo large ribbon and wire connections on right, remove screws left and right, release
two catch tangs on bottom edge using a small screwdriver on the inside of the unit.
4. Remove the white plastic cover over the laser mechanism ( 2 screws) Remove the disk carrier by removing the center screw.
5. Extend the tray again. When the tray is out the small ribbon cable is visible below the tray. Undo the ribon cable where it attaches to the main unit unit.
6. To slide the tray off the main unit use a small screwdriver to depress the stop catches (2) in the tray. They are molded into the tray.
Pull the tray out further then lift up.
7. Flip over the tray and find the small circuit board the ribbon cable goes to. Desolder the motor wires (red and black) and remove the 2 screws
holding the circuit board and position switch.

Use a multimeter to confirm there is an open or poor connection in the ribbon cable connector.

Remove the ribon cable and inspect the connector with an eye loupe or other magnification device. On my player contact #1 was not positioned properly
to press against the ribbon cable conductor. You can either replace the connector or repair it.
Warning: repairing the connector may damage it.
To repair the contact desolder the connector from the circuit board. Bend the circuit board prong straight and push it into the body of the
connector which will extend the contact out and the contact can be reformed. Be very gentle. Bending the contact may cause it to break.

Reassembly is the reverse. Don't forget to solder the motor wires with the proper polarity. Red and Black are labeled on the circuit board.