40 yearold computers still in use 92

True, but there were duds in the 70's. RCA sold zillions of CTC-38s and there's few of them around today cause they were notorious or popping the flyback transformer. There's still quite a few CTC-15-16s out there, even though they're a generation older. There was a LOT of flip flopping between tube-transistor-hybrid sets in the 60's and 70's - the first all solid state (save for HV rect and CRT) set was sold in the late 50's (Philco Safari). The last pure tube TV was sold at least as late as 1978 (GE portacolor - supposedly dropped around 1980). A lot of designs went back and forth between tube and solid state - IIRC, Sylvania's color chbuttis of the 60's started pure tube, went heaviliy solid state, then started going back towards tubes. It's probbably safe to say the early generation solid state stuff was as bad or worse than tubes of the day (though this isn't surprising, really). I know jukebox and PA amps went solid state then back to tubes in the 60s - Seeburg made the jump to solid state, but Rock-Ola, and AMI in particular went back and forth. I think Wurlitzer went SS a bit after Seeburg, but by 1964 they didn't mean anything in the industry anyway.

I've seen a lot of 2nd generation color TVs still in use, either collector owned or still in 'regular' use (you could get 21FJP22s new fairly readily even into the late 90's), but I've seen far fewer 3rd generation sets with early rectangular CRTs out there. The exception being Sony Trinitrons, of which the first models sold in the US are still quite common to see at thrift stores, etc. Very inexpensive and they tend to work nicely.

Brand also affected this - there are few old GEs out there, though they sold lots, and a lot of RCAs and Zeniths. The latter two were far better built than the former - GEs of any vintage are regarded as junk by TV colectors.