Hey everyone, I want to mention I ran into a minor issue with my C64 Ultimate 2. It stopped working, sort of. I hadn't powered it on for about a week then when I did, I got nothing. No lights and a screeching sound on the monitor. I am running it on a c64c and was perplexed. Actually just short of panicked. I plugged in an omega race cartridge and it worked just fine.
Long story short, I think I have figured it out. I swapped power supplies with a regular c64 I have and it now it works just fine. I guess my old gray colored power supply that came with the c64c is not quite functioning properly or maybe not providing the correct voltage. Also it was plugged into a decent power strip which was powered on all this time. I recommend either unplugging the old console/computer from power or power off the power strip it is plugged into when they are not in use.