[Danberg]

I am the original owner of a Kenwood KD-550 Anti-Resonance "resin concrete" base turntable, purchased in 1977.

I was wondering if any of you are familiar with that turntable and possible repair of same.  I am looking to sell it and am curious if it is repairable, by myself, or should just be thrown away.

The symptoms are; 
The built in strobe light started working sporatically.  NO biggie, not that much of a aggravation.  That was followed over a period of a year or so by the turntable ocassionally not spinning when the ON-OFF switch was turned on. 

If I cycled the ON-OFF several times the turntable would start rotating.  However, that ocassional lack of platter rotation became more & more frequent, to the point that the turntable will not rotate at all when turned on, OR cycled on & off.

I know the ON-OFF switch is working because the strobe light comes on when the switch is turned to the "ON" position.

Any ideas what to look for?     

[Davey]

If you're going to throw it away, throw it my direction would you.    I have a KD-500 myself that has endured many hours of usage.

If the motor itself is still working okay you should have no trouble repairing it.
Here's a schematic for reference.  The neon lamp is upstream of the transformer, fuse and rectifier so those items....along with the switch....should be checked.

Cheers,

Dave.

[jimdgoulding]

Sounds like the rpm's are messed up if I read you right.  Motor problem?  BTW, I had one of those, too, back in the day.