Lifespan of a quality solid state amplifier?

Hopefully one of the A'gon techies will chime in, but FWIW, here's my thought. SS does age. I base this view on the "care and feeding" I occasionally do with my old Crown DC300A. For those old-heads out there, you know this amp - it's immortal and bomb proof. Nevertheless, the last time I sent it to the Crown factory for a "grease and lube," they replaced some of the old electrlytics, believe or not, the power supply caps and a couple of transistors. The stats are incredible, thank G-d for NF.

Kijanki, got a question. As I mentioned above, Crown rehabed my DC300A about 6 months to a year ago. I keep it around as a back up amp, but haven't turned it on since Crown checked it over. Per your post about caps drying out, can I safely plug the amp in without an input signal or a load just to get some juice running through it?? Will that keep the caps healthy?

Kijanki, can I power up the amp without a load or input signal? I've heard that it's best to have a load with tube amps. Different beasts of course, still better to ask.

I too will post my last comment. Even though I know squat about electronics, I repeat what I posted before. I own 2 vintage Crown "back-up" amps from the 70s. The darn things are bomb proof. Even though I have sent them to the Crown factory every once in a while for a check-up, the factory always winds up replacing a few out of spec electrolytics or resisters. The parts cost a buck or two a piece, but the point is they GET replaced. Like US, they AGE. My point is that I love my old Crown amps. I don't care how they sound compared to current stuff. They are 100% USA built, top build quality, and I'm proud to own them. The fact that a couple crappy little passives needs to be replaced every couple years to keeps the amps working at barely measurable distortion levels is AMAZING. That's why I own all ARC gear. It's 100% USA built with probably 100% USA built passives. Even though I pay a heck of lot more that if I bought some foreign built stuff, I'm proud to own it, proud that I can support American CRAFTSMEN/WOMEN. And so far, I can say that other than an occassional bad tube or bias resister, the stuff is bomb proof just like my back-up Crown gear. So THERE!! HUH!! G-d Bless America!!!!!!!