Please Help. J. A. Michell Gyro SE - Speed Issue

For what it's worth--I had a similar issue with an Ariston table.  The platter was spinning really fast and kept speeding up.  I took the table to a local stereo repair shop and the problem turned out to be dirty potentiometers in the speed adjustment circuitry.  They cleaned the pots and all is well.  Maybe relevant, maybe not.

Bill

I think the first thing you should try is replacing the belt. My Basis is very speed sensitive to different belts. Worth a try at least. 

Try the belt first. Does your gyrodec have the older ac motor or the newer (post 2000?) dc motor? This link may help. https://www.angelfire.com/music5/michell_gyrodec/

My dc motor has a speed adjustment.

Hope this helps.

How is the belt going to cause this problem?

Thank you all for the excellent replies'.

I should add that I installed a new belt a few months ago.  I put a new belt on every 4-5 years.

I change the oil every winter.  5W30 Mobil One.

Yes, I have speed control in a black box that sits below the table on another shelf.  There is a small screw (horizontal) to turn that adjusts faster or slower the speed of the table.  The table is running so fast there is not enough adjustment in the screw to slow it down.  I don't know if its a DC or AC motor, does the speed control in the box provide a clue?

I will attempt to contact fidelity imports....thanks for the tip.

And thanks Bill for the Pots cleaning tip....I have a can of electronic cleaner, I may try that as well....