I downloaded the manual online and didn't see any reference to a fuse so if there is, it's not meant to be user accessible.

The troubleshooter says "This unit’s amplifier circuit has failed. Unplug the power cord and contact our customer service center" based on how my friend described how the receiver was acting when he turned it on. He already contacted the place he got it from and they are sending him a replacement and a return shipping label. And so the waiting game continues. Still waiting for the replacement driver for my M60 anyway.

M60
VP180
M2i
Sony STR-DN 1080