Gyrodec motor repairs

[Mr.Ian]

I think my Gryrodec motor has dried out, the spindle is very difficult to get going after it hasnt been used for a while. Once I have freed it up using my fingers it works ok until it hasnt been used for a while.

Sent an enquiry to Michell but no reply. Anyone had a reliable repair done elsewhere?

[struth]

oil maybe gone gunky. try cleaning it out and replacing fluid.

[Mr.Ian]

The motors stiff, not the platter

[Gazjam]

Ian,
Is your motor silver?

If so, I have a spare I'd sell.

[Mr.Ian]

Gold :doh:

[User211]

Phone them up. I've had a couple of chats with them in the past.

[sjs]

If it's the Papst motor with the external flywheel they can be stripped down, cleaned up and work like new again.

Best of luck

Sent from my SM-G960F using Tapatalk

[Mr.Ian]

Heard back from Michell, £54 inc vat and return postage.

Motor removal is pretty simple, disconnect mains power. Undo allen bolt on top of motor cover, lift up motor and cover place on its side next to platter. prise the rubber/felt washer off the top of the power input socket and slide up the cable that goes to the motor. MAKE A NOTE OF WHICH CABLE GOES WHERE. cut or unsolder the 3 power cables lift off and remove outer case.

Removal looks as if it will be more diffcult because access to the power socket cables for resoldering is restricted. The arm board assemby and platter will probable need to come off

[YNWaN]

An unusual problem because turntable motors rarely dry up/seize in the manner described. Is your turntable motor near a radiator or often in direct sunlight?

[Mr.Ian]

Actually I think michell could be held liable, the qc psu if left on dries the motor out. I found out the hard way but the damage was done

[YNWaN]

Ah, now you mention it I think I do recall people have mentioned that some quiescent current is present at the motor all the time - not the best design :(.

[Hammer]

I had the same problem with the Papst motor took it to Deco audio who cleaned and serviced it about 18 months ago it's worked perfectly since

[gwernaffield]

this was a reply from michell with regards to servicing the Papst motor
The old AC motors have two sintered bearings. If they have dried out then they can be oiled but they won’t be the same as before they dried out, you might get a year or two before they will need doing again. You really need to strip the motor down to lubricate it because if you oil it from the top, it could make the motor noisy, as you will be lubricating the series of washers on the top of the motor and they can then begin to vibrate. You can try using something thin like ZX1 or WD40.

The best thing would be to send it to us, so we can then replace the washers and circlip etc. and give it a good clean out and lubrication.

If you are using a QC power supply with it, make sure you turn the QC off when not in use. The QC has a current path to keep the motor warm, over a long period of time this will speed up the bearings drying out.
from Michell

[Mr.Ian]

the motor arrived back today, fitting was a faff, took several attempts to get it sorted.

The problem being that the washer that covers the wiring in the plug and/or the wiring itself was catching on the motor and cause a whining noise. It took several attempts to get the wiring away from the motor. Wrapped round the mounting post and making sure the washer was stuck down firmly sorted it .