Strange behaviour of the OB-Mx (self power cycle)

I wasn't using this synth for a while, today I decided I wanted to properly explore the modulation matrix in conjunction
with the MAQ16/3... then all of a sudden the box resets, like a power cycle... then after 10 seconds that it is responsive
again, another power cycle... I hear the "click" of a relais inside it, I assume that the power supply has some issues.
I did promtly shut it down, to avoid more issues.

Any robots had similar problems with their boxes?

I will dismount mine from the rack and open it, maybe there is a dead rat inside that is bridging two points...

a.