I hear you 100% on the depending on solar & wind. It's nice to have some energy come from that, but just as an alternative.
After turning off and unplugging my Phaser 7400 overnight, it worked again yesterday & is humming along again now. I'm lucky for once, I guess.
I'm afraid I have bad news. It turned my 7400, with just 14000 copies on it, into a boat anchor. I had a tech come over and take it apart, but the only place you can find the repair parts is on ebay. I used my sawsall and a sledge hammer to tear it apart and tossed it into the dumpster. Went back to HP. That code I was told was the computer board that had gone bad.
And yes, the power grid is failing, not just in Texas. You folks just got caught with your shorts down. Too much reliance on wind and solar. Here in CO, we arn't far behind. Our grid is getting so unstable that I had to install a whole house surge protector, about 1k, to protect my high end electronics and too keep the smoke detectors from going off in the middle of the night.
I'd just junk the 7400. Getting too hard to get other parts as well.
Does anyone know how to fix a U60 error code on a Phaser 7400dn? I really don't want to pay someone 300 just to come down and say hello.