my emu keeps shutting down after a fiew minutes when switched on. only front panel leds (exept midi & scsi leds) turn on and everything else turns off. no signal in or out as far as i can tell.
I had the same thing happen to me. Not sure if this is whats wrong with yours but...
If you have an internal ide hard drive check the ide cable, mine was loose and half way through booting it would "short" out the load up sequence and go to a black screen but the leds would still be on.
If this is not the case still try checking all the internal connections espc the screen cable.