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Marantz 6100 audible 'pop' sound from motor?

C

cambronne71

New Member
hello again, I seldom post but have been using the forum for tons of great info on repairing some turntables. great advice on here always.

on my Marantz 6100 (purchased from a certain auction site), there is an audible "pop" sound through the speakers when the motor starts or stops via the tonearm. it happens when I manually move the tonearm towards/away from the platter and also during the auto return/stop. it is one single "pop" sound which seems to occur right at the time of the motor starting/stopping.

all wires are properly connected, all grounds are good. is it possible the capacitor at the power cable to the motor is bad and would cause this?

any advice is greatly appreciated! thank you!
 
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What size and type of capacitor did you use? Mine indicates it's a .047 mlf 125v, but I can't figure out what type it is. Does it really matter, as long as it has the same characteristics?
 
size? well what I can tell you is I used a polyester film cap that matched the exact specifications of the schematic (which I do not have in front of me). so yes, be sure to match that capacitance and voltage rating. NEVER less than specified!

as always stated...if you have not worked on this type of equipment before PROCEED WITH CAUTION.
 
cambronne71 said:
so yes, be sure to match that capacitance and voltage rating. NEVER less than specified!
Click to expand...

To be clear, the capacitance should be exactly that which is specified. The voltage rating specified can be considered a minimum. If you can't match it exactly then go higher, even a lot higher. The voltage spec is what the cap is able to handle so if the spec is say 125V a 250V cap will work just fine but a 50V cap won't.

John
 
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