Tony's suggestion is the best at this point - look for issues with the motor start and/or run caps. A shorted (or open..) cap can certainly cause this issue. Shorted and it draws excess current in the cap, open and it may prevent motor starting / running which likewise draws excess (stall) current, but in the motor windings.
Also, it shouldn't be too hard to isolate the motor assy. itself from the rest of the circuit - lift the correct lead(s) from the AC power distribution system. It may be much easier if you can deal with the motor / cap assy. as a single entity, rather than within the rest of the complexity. This is just generic advice from a guy who's never fixed a 33. But assuming yours has the standard AC synchronous motor, it should all apply. Motors only draw excess current for a very few reasons - overload / stall, shorted windings, bad start / run caps and possibly associated start / run relays. On Thu, Oct 13, 2016 at 11:34 PM, tony duell <[email protected]> wrote: > > > The buzzing definitely seems to be coming from the motor. I put a > plastic > > tool to the casing and could feel it vibrating. However, I can turn it by > > hand (clockwise) and see all the gears and striker mechanisms working. > > Should the motor be running in the 'Off' positon of the switch, though? > > If the motor is buzzing and taking a high current (which blows the fuse), > what about the motor run capacitor (the one on the mechanism chassis > itself, wired to the motor)? Maybe it has failed. > > -tony >
