it does not turned on anymore.

Hi @eyatilman ,

Check that the DC input jack has not been damaged and also that the fuse on the AJACK board is OK.

After that you may have to go further into the circuit to determine what the problem is.

Here’s a link to the service manual for the keyboard.

To download the file when the sentence below the Document preview box changes from This file is downloadable free of charge: …processing…to This file is downloadable free of charge: Download , click on Download as this is the link. Be patient it takes a little while to find the file.

Here’s an image taken from the manual showing the relevant section of the circuit

(click on image to enlarge for better viewing).

The manual has a full parts list which will help if you need to obtain a replacement part.