[high_vacuum_house]

An obvious point when restoring sets is to ensure good quality of replacement parts (i.e capacitors) and to ensure such things that insulation sleeves and wiring grommets on wiring to terminals haven't gone missing or crumbled away over time.

Obviously many sets were made before BS415 came into being so there may well be poorer construction standards than is satisfactory now. (mains switching, fusing, insulation material types and properties, creepage distances ect..)

Also worth ensuring like for like power rating for such items as resistors so that if a fault develops, a protection device would operate rather than a high power resistor in place of say a small or fusible resistor sit there causing heating of another component rather than failing itself.

I keep my sets on a wooden table or shelf and away from carpets etc.. so that the ventilation holes cannot accidently be covered up.

Christopher Capener