Roland RP401R Fault

Hi guys, a few days ago my daughters RP401R digital piano went “fffffffssssst” and stopped working. The green power button LED comes on but nobodies home…
Any suggestions on what could be wrong or how to fault find? The owners manual is crappy and cant find a service manual anywhere!

We only bought it secons hand 3 months back for $850 so really hope we can get it going again.

Any help will be appreciated!

Hmmmm … first things first. Are you using the correct AC adapter for that model or has it been supplied with an aftermarket replacement type? Can you supply a picture of the AC adapter you are using?