Thanks for the great responses! Didn't open anything up to look inside, so I did not check the fuse. It powers up for the first step in the process, but the second step to operate is the problem. When I talked to the person at NuPrime there was no mention of a fuse being the culprit. I know nothing about electronics or how they work unfortunately, so I didn't mention fuses, etc. I have changed the fuse on some other pieces of gear I own and it's an easy task on some gear. As for the piece being old (at perhaps 10-12 years old), that may be true that the parts don't last forever etc, but I have gear, including some preamps that are much older that still function perfectly and a few which have only required some cleaning of pots, switches, etc. These include, McIntosh C28 (early 70's), Pioneer Spec 1 (mid 70's), Counterpoint SA-1000 (early 90's), Audible Illusions (mid 90's) as well as Audio Research and Ayre from roughly same manufacture period of the P-16.Most of those brands are also still very much in business so parts, service are still available if need be. Maybe the NuForce was a bad one from the batch? NuForce being out of business is the real issue here and I certainly understand that. The person at NuPrime did say however that this was a problem that was not uncommon in those products. I still think it's a wonderful preamp sonically and would love to hear a current NuPrime preamp one day. Don't know of any dealers here in the NJ/NY area however. Thanks again for the replies.