Ekco AC18 HT Unit - using?

[pwdrive]

Maybe the capacitors in the black box were electrolytics, testing them out of circuit with an analogue meter set to ohms might give some indication as to what's what inside that box, if they are paper and electrically leaking the resistance should be the same when connecting to the meter one way then the other way (reverse connection) if they are electrolytic the readings might be different when the test connections are reversed...possibly.

Lawrence.