If you emailed
support@mutoh.com you should have at least gotten a response.
The first line of service is always through your dealer.
Let me apologize if you fell through the cracks, we do have limited resources and occasionally things slip by us.
I think these print servers are well out of warranty, and if they are being damaged by power surges, the advice from Mutoh would be for a surge protector/line conditioner.
Mutoh will assist with out of warranty items, you can always call up, but if it is more than just a quick recommendation, there will be a charge.