2626 Power supply fail

Hey,

My power supply on my 2626 has just recently started acting weird. Every time i switch on other devices in my studio (space echo, valve pre...) it cuts the power on the 2626 for a second and i lose sync with ableton and have to reconnect. It comes straight back on so it's just a quick drop out. But it's unusable in this state. Had it 3 years with no problems but it's just started this week.

Any one had the same thing?? Any one any ideas??

Thanks,

Rob