Emax

My first post.  I think it's a beauty.

Okay, here's the deal:  I got an Emax from a friend, I guess it sat 
in his garage for a long, long time.  It certainly looks like it -- 
absolutely pristine.

Now the problem:  it won't boot up!

It gives the Loading Software "splash screen," gives three reads 
of the drive, then goes to a blank LCD.

If I put a non-Emax disk in it, it recognizes it as an alien disk and 
goes keeps reading it (it's got a good rhythm).

Any ideas?  It's not the disk drive (swapped it with another 
Emax's, which has a dead sample input.. same symptom).

I have an essentially good Emax (but with a dead sample input) 
with which I can swap parts.. anything I should look at 
swapping?

I tried swapping the digital boards and it just resulted in a blank 
LCD when booting up. 

Thanks, folks.  I'm all torn up, I want to hear 12-bit choirs!

--S