Cd won't open

The only way to find out will be to open it to view the CD area. Then power it up. And watch what happens.
It could be a foreign object in the mechanism.

There is a small hole just above the door on most CD changers. Unwind a small paper clip and GENTLY push it into the hole. This should release the door, and let you look inside. Don't force it because you could damage it more than it is already.

It is the fuse, or the power transformer that in some cases has a built in thermal fuse in place of the regular fuse.

the rubber rope which conect the motor to a small gears to open the cd was cut due to long using ... this sound of clicking coz the small motor is running and its not attached to anything ... its a small rounded rubber rope ..the bad news is you have to break some plastic stuff to reach the motor in the repair depot they change the whole upper part so it costs alot ... but if you can reach it it will work perfect as its new.

clean the lends with cotton wool

Maybe the code error are F 61 for a panasonic sistem that code means bad audio amplifier

The code CD20 means Tray error. The cd mechanism will have to be reset by a serviceman .

I had the same problem with my CMT-EP707. I read on this site to try various combinations of turning power off then turning the power back on while holding down either or both of the stop play button and the eject button for the affected CD tray. What seemed to work for me was turning on the power while holding down the eject button for CD tray 2, even though the error referred to CD tray 1.

The system may need to reset. Unplugged the amp from the power source completely and let it rest for at least 5 minutes.

The illumination can only be controlled from the main remote. Adjust the prongs inside the remote and this should fix the issue.

How do I hook up the speakers?