"last night it started squelching out on its on"
Does the display show ". . . . . . . . ." instead of numbers when it does that?
That's a very common problem and I think maybe even the sound goes out before the dots show up...
There are a number of circuits inside that don't age well... they potted them in some water-absorbing rubber stuff that causes trouble over time, and it's basically a sure thing that it will happen to the rig eventually.
If that's the problem, the fix usually isn't too hard if you're handy with soldering gear and tweezers, you just take the goop out and tweak a couple inductors while watching a voltage with a voltmeter as a first pass; you might want to join the TS-440 Yahoo Group or at least browse the archives:http://groups.yahoo.com/group/TS-440/
I fixed my dots problem almost entirely by myself with help of info available there.
"I notced the fan was also not working. Didn't know if this fan comes on with the power or if it perhaps cuts on after reaching a certain temp."
Yes, the fan only comes on when the temp gets high enough.