Quote Originally Posted by Steve Smith View Post
On valve (tube) equipment with similar voltages, I usually put a 100K bleed resistor on one of the capacitors. It only needs to be about 1 watt rating.

Typical Flash 250 uF 330 V Nom initial discharge power = V^2/R = 330 *330/100000 = 1.1 Watt
1 Watt might be OK for tube Hi Fi etc where the voltage is lower.

i prefer the wirewound with safety factor and posts so the insulated leads last longer before breaking off
a 20 W resistor is OK right up to 1 kiloVolt ( I work with industrial capacitors too)
The high potential capacitor testers usually have an inbuilt discharge which is safer than messing around with clip leads etc.