Quote:
Originally Posted by earlyfilm
I assume that the purpose of heating and resealing is to dive the moisture out the coil and then keep it out. Correct?
OK, first question is what is the purpose of the cleaning? To rough up the surface for the new coating to stick? To remove the old varnish?
James
|
Yes, after washing it I needed to get it hot enough to dry it out, the cleaner is very caustic full strength but I diluted it down to a fairly weak solution.
The purpose of washing it was just to get it clean, the top had been off the cage and the coils were pretty packed with dirt, also the Phenolic board was filthy, there's really no other way to get it this clean, picking at it with Q-Tips might make it look better but it's probably no less risky than just soaking it, also I just think it's a good idea to re insulate the windings after 64 years, they usually look pretty dry on these things and if you've ever brought a screwdriver near the coils while it's operating you will see that they leak all over the place, probably still will even after spraying but I'm more worried about leaking inside the coils.
I don't know if this transformer worked prior to cleaning or if it will after, the set is being recapped and then I'll find out, it looks to be in good shape though.
I have washed them out before with no ill effects, same with Flybacks and even entire chassis, as long as they dry sufficiently they are OK, I figure being full of dirt has to be bad for them.