

If you do it preemptively, there's no harm done.Īll paper dielectric capacitors should be replaced with polypropylene except for a very few types that don't appear until around 1958. When you get into gear this old, a big part of the process involves simply knowing from experience which components are likely to fail and replacing them. (not talking about filter caps, obviously)Andrew,

01nF to 100uF-am I ok leaving the caps in if their capacitance tests within spec, or must I consider ESR as well? I've been told ESR is important for crossover caps, not sure if I need to worry about it for tone and coupling caps. I just got a Craftsman multimeter that measures capacitance from. I've already rebuilt one Leslie with the Tonewheel General kit, and I know the others probably need some components replaced as well.

I have a Model A and CV in my care, along with associated Leslies and really old tone cabinets.
