Korg Poly800/EX800 Users

Hello everyone.

It's been a while since my modded Poly 800 has been behaving 
erratically. It will, all of a sudden, power off and on again and in 
the process, it will lose ALL patches, leaving random-generated 
patches (almost all unusable, even with "impossible" values such as 4 
in the oscillator octaves). Has anybody gone thru this before?

I know the mods are not directly related to this malfunction, but as 
the synth is not finally assembled (some screws yet to be tightened) 
I was wondering whether a loose board could be the culprit. One more 
thing: I managed to have the synth open during one of these 
breakdowns and noticed that some of the diodes between DB2 to DB9 
emitted a reddish light. Is this normal?

Thanks in advance,

Dave