Completely anecdotal, and mostly unrelated, but my NES from 1990 is still going strong. Two PS3’s that I have owned simply broke.
CRTs from 1994 and 2002 still going strong. LCD tvs from 2012 and 2022 just went kaput for no reason.
Old hardware rocks.
LCD tvs from 2012 and 2022 just went kaput for no reason.
Most likely bad capacitors. The https://en.wikipedia.org/wiki/Capacitor_plague may have passed, but electrolytic capacitors are still the major life-limiting component in electronics.
MLCC's look ready to take over nearly all uses of electrolytics.
They still degrade with time, but in a very predictable way.
That makes it possible to build a version of your design with all capacitors '50 year aged' and check it still works.
Sadly no engineering firm I know does this, despite it being very cheap and easy to do.
For what it's worth my LCD monitor from 2010 is doing well. I think the power supplied died at one point but I already had a laptop supply to replace it with.
Specifically old Japanese hardware from the 80s and 90s - this stuff is bulletproof
I still have a Marantz amp from the 80's that works like new, it hasn't even been recapped.