"frozen" ASR10 help please

When I turn on my ASR keyboard, the disk drive doesn’t boot up and all the track lights come on and stay lit green. Can anyone tell me what may be the problem? If not, are there any s shops in US that service ASR10 keyboard?

It may well be a power supply problem. Pop it open, and check all of the fuses on the power supply board. Here are some helpful documents:

Opening an Ensoniq ASR-10 or TS-10 (syntaur.com)
Diagnosing an Ensoniq Power Supply (syntaur.com)