I was playing at an outdoor concert last night and my Receptor 2+ PRO shut itself down in the middle of the show. I tried to restart it and it would not come up - then the sound guy plugged it into a different electrical source and it worked fine for the rest of the gig.

I am wondering if it was one of two things : maybe it overheated and the unit shut itself down as a form of protection -- though overheating doesn't seem likely as the sound guy checked the fan in the back right after it came up and it wasn't not back there. The other guess is that it was electrical.

The electricity set up at the show was this : the stage was powered by a generator. The sound guy had the generator plugged into a Furman power conditioner which he claimed was necessary due to the character of the power coming off of the generator. I told him that Muse recommends not using a power conditioner but he said there was no way around that here. Anyway, I plugged a UPS (Tripp Lite Smart Pro) into a quad box coming off of the Furman, and plugged the Receptor 2+ PRO into the UPS. When Receptor went down everything else plugged into the UPS was fine (so I don't think it's the UPS but I'm not sure). I tried to restart the Receptor 2+ PRO and it wouldn't come up -- the sound guy then plugged the Receptor directly into the front of the Furman Power Conditioner which he said seperated it from the what the rest of the band was using -- and it worked fine for the rest of the gig. He suggested there may have been a voltage drop that caused the issue -- but that doesn't explain why it didn't come up when I restarted it (it was still plugged into the Tripp Lite UPS at this point).

The more I think about it the sound guy may have had an overly confused and complicated electrical situation -- he had multiple power conditioners on the stage and I don't know what he was using each one for or even if he really needed all of them.

Any thoughts would be appreciated. I have contacted Muse as well. I have another outdoor concert on Monday so I'd love to have this solved by then. The power situation for Monday is much simpler -- it's an outdoor concrete bandshell that has outlets on the stage - regular power (as in not a generator).

It's possible that there was a voltage drop, which passed through the UPS un-corrected. The voltage drop was not enough to activate the UPS, but it was enough to affect Receptor.

I have seen this behaviour on a Receptor B before. At that moment I thought that it was caused by overheating, but I am not sure. Reset via the power button did not work anymore, I really had to remove the plug. Probably the BIOS of the motherboard crashed. You might have had the same issue. Then, the difference was not caused by using a different power source but by unplugging the Receptor.

I don't own a receptor, but it sounds to me like a ground fault interrupter with automatic reset. I.e it cut power to protect the device, and it reset when power was turned off externally or unplugged.