When did tv sets becamed more relaible and why?

[Electronic M]

Originally Posted by Alex KL-1

(Now I posted on correct thread):
Only for amusing, I only imagine perhaps a tube-based TV with modern resistors, capacitors and flyback/coils, with nowadays better stable mains, if reliability will be better than in it's days. At least for audio products, with modern parts, I can only need to change tubes when the tube are with problem, and not a problem caused by a bad resistor or (paper) capacitor cooking the tube (in the bias circuits for example). Of course, TV have far more tubes and resulting heat, but even so... (only for illustrating the contribution of passive parts)

More stable mains?!? They're worse now than I remember them being as a kid. Noise, spikes/dips, outages I seen more of all the last few years than growing up.

The late 60s Zenith's with all film caps, silicone flybacks, and lytics not much different from modern ones (ignoring size) are about as you describe a hypothetical modern set, and are fairly long lived.