Sony LBT-D250 5 disc changer

The error code C 31 00 on Sony DVD Home Theater System usually indicates a mechanical issue with the disc changer mechanism. Here are some steps you can try to resolve the issue:

1. Turn off the power to the DVD Home Theater System and unplug it from the wall outlet.
2. Wait for a few minutes, then plug the system back in and turn it on.
3. Press the "Eject" button on the remote or the unit to try to eject the disc tray.
4. Gently try to move the disc tray by hand to see if it is stuck or obstructed.
5. If the disc tray does not move, or if you hear any unusual noises, it may indicate a more serious mechanical issue that requires repair.

If none of these steps resolves the issue, it's recommended to contact Sony customer support or a qualified technician for further assistance.

before you press the cd on button keep holding the eject button while you press power on, I know this works for computers etc.

Short circuited component/s at it internal circuit board. Contact any service technician. Never switch it on; without the fault have been rectified. It might make troubleshooting more complicated, and might cause more components damage.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Sounds like the optical pickup (laser) has gone bad and needs to be replaced.

Hi, the error is because the cd changer is not turning, something block it! or ther is an audio cd inside that blocks the normal function or change the "rubber belt" that the motor drives for the disc system changer!, an other problem could be that is not reading the audio cd's.
If you do chek this shure you solve this problem

I do not have any experience on your type of hifi but i reckon dest error refers to "Destination error" the 3 disc changer has a default home position of the disc carousel that it goes to when first starting up. I would suggest that somthing is preventing the cd mechanism from getting there to it's home when it starts up. This could be from a cd or foreign object jam, broken motor( or worn motor) broken or dirty sensor that detects where the mechanism is or broken cable connecting the two.
The key to finding this out after you fix the jam, would be to note if the mechansism is travelling, whether it sounds forced or if it's not moving at all. this will tell you whether it's motor or sensor related.
As I said I don't have any experience on this one, perhaps someone more qualified could comment...
Good Luck!

sounds like its jammed, does it make any attempt to eject, can you hear any noise from inside?

defective call customer support or bring it back to were you bought it

Power protect tends to mean the main power amp chip has "blown" and needs to be replaced. It only costs about 20 dollars (10GBP). If you are handy with a soldering iron it is easy to do (after you get the thing to bits !) It is the big black thing on the big heatsink inside. The Sony part number is STK442 - 130. Seems a waste to throw the whole thing away for the sake of 10 pounds !. Hope this helps. Nik Howell ([email protected])