[45philcodon]

I've just started restoration of a Philco Model 620 from 1935. It is totally original; no prior evidence of prior restoration. I've measured all resistor values to determine which parts need replacement. Several of the resistors needing replacement are obviously higher power resistors. The parts list does not specify power so I calculated the approximate power from listed voltages.

The physically largest resistor only dissipates 60 MW. What am I missing? Why would Philco use larger parts than required?

Any thoughts would be welcome.