Audio Research VT100MKII power switch stuck on


So my Audio Research VT100MKII is stuck on! Switch rocks on and off but the amp stays on. Anybody else have this issue? Is there a fix without having to send back to ARC again?!! That was yesterday and it had been on since Sunday(had not realized til yesterday). Listened to music for a while last night with no problem and unplugged it afterwards. Now this morning I plugged it in to check it, the outlet sparked and the amp blew its fuse. Any ideas or input appreciated.
sgonzalez33