Not in general.
Sometimes a lousy construction results damage.
Take care that tubes don`t heat up caps, elytics or diodes.
To save money companies used resistors which are hot from the
first day, try to use resistors which can stand a higher current and place
them carefully on the chassis not to heat over parts.
My Tandberg TV 1 (AC/DC chassis, transformer) has burned knobs, just because the main resistor
produced too much heat.
Before I install good ones (same knobs like Telefunken because made
in Germany) I will make some changes in the power plant.
My Raytheon Porthole had a totally burned transformer, my transformer
rewinder told me, that it was wrong constructed.
He said that it makes him wonder that this transformer survived more
then a week.
We call this in Germany a "monday set", produced on a monday.
Best regards
TV-Collector
