Cd tray closes quickly without pressing switch on Technics SL-pd688

I'm sorry to hear that you're missing a spring from your Technics SL-MC4 CD player. Based on your description, it sounds like the spring is part of the mechanism that opens and closes the CD tray. Without seeing the specific spring and mechanism, it's hard to give you exact instructions on where it goes. However, here are some general steps you can follow to try to determine where the spring goes:

1. Look for any other springs in the CD player. If there are other springs, compare them to the missing one to see if they look similar. This may give you a clue as to where the missing spring should go.
2. Look for any empty hooks or brackets. Check the mechanism that opens and closes the CD tray for any hooks or brackets that look like they might be missing a spring. The missing spring may attach to one of these hooks or brackets.
3. Check the CD player's manual or service manual. If you have the manual for your Technics SL-MC4 CD player, check it for any diagrams or instructions on the mechanism that opens and closes the CD tray. The manual may provide information on where the missing spring should go.
4. Seek professional help. If you are unable to determine where the missing spring goes, it may be best to seek the help of a professional technician who has experience with repairing CD players. They may be able to diagnose the problem and replace the missing spring for you.

Again, without more information or a visual inspection of the CD player, it's hard to provide more specific instructions. I hope these steps help you locate the missing spring and get your CD player working properly again.

its either a belt or motor if direct drive

JUust get a different CD- Player ,It will cost you less then to have it repaired, WHere i live i can get a good used one for $10 to $30 at the most, End they are not hot,

The 688 should be close enough...

http://www2.panasonic.com/consumer-electronics/support/Audio/Technics-Audio-DJ/Technics-CD-Players/model.SL-PD688

Just a quick notion! Had you made sure the transit locking pieces were removed?

What model is your juke?

Dear friend, my sony dvd drive tray opens and closes itself, it is mostly a problem related to hardware. in my case I removed the IDE Data cable connected to the dvd drive and reconnected it again. now my dvd drive works well, I think the problem was the IDE data cable, may be a loose contact.due to this loose cantact,a jung signal goes to the dvd drive, which opens and closes the tray frequently without our knowledge.

I DO NOT think that problem related with CD cleaner
3 possibility here
1 The loading belt was lose it can not open fully to reach the switch open when the time limited was out as program design from system control it automatic close
2 The loading gear system out of position 1 tooth
3 Dry joints on switch open and close or connector from CD tray to system control intermittent contact
In any case it require a qualifier Tech from Panasonic to reset the timimg gear or service
I hope that give you some ideas if you need further info or service manual I am willing to help you out
Cheers

Alotta of the times if you have an sd card inserted take it out then repower up the dz 1200 and wallah your eject button is rollin!

This is straightforward. You have to ensure that the disk is stopped by pressing the square symbolled button then press disk skip once or twice and open the tray. Presto (if it is working correctly)