Hi, My Riso RP3700 won't power up. It started by us having to wait about 10minutes from turning it on before any life kicked into the machine. Now its completely dead. I've checked the fuses and changed the battery. Any suggestions?

This is very difficult to resolved you need a technical personel to resolve it. You need to replace either your main power supply unit or the controller board. Ussualy if your machine is totally no power you need power supply unit. You need to removed the back cover of your machine and check if some LED in controller boards lit on. if you see some LED lit on your technical people can reprogram the firmware by putting a flash memory but if same problem persist you need to change the main power supply.