Vintage Synth Repair

Hello,

I have a Roland A-37 MIDI Keyboard Controller that doesn't power up.
I actually bought this at an estate sale to resell --- but there was no joy when I got it home and plugged in a power supply.

I've seen numerous other ones just like this for sale online ---"looks like new but won't power-up"

I'm guessing there might be a common fix --- such as an inline fuse.
Anyone know?

Thanks,
Sam