Restoration and Modification of Pioneer PL-71 turntable

[RickRay]

Is the stobe on the PL-71 actually reading the platter speed or is it ran by the 60Hz to show a reference. It's possible your line frequency may be varying slightly.

 

[RickRay]

I use a crystal driven strobe to avoid that issue.



Plans for the strobe can be found on Vinyl Engine. I built it on perfboard.

 

[MattHauck]

I gave the pots a good clean with some dioxit when I did the recap, so replacement seems in order, perhaps.

I have been relying on the strobe built in to the TT. The fluctuation seems to be at the same point every revolution. So, before I do any more soldering, I think I'll try a dash of lubrication and see if that takes care of the hesitation at the one spot as it spins.