Music Hall mmf-7 spins faster


I have a Music Hall mmf-7 turntable (EAR 834P phono preamp) and it spins faster than normal. I bought a new motor and a new belt from Roy Hall, but it didn't change a thing. I borrowed my friends' motor (he has an mmf-7.1): no change... I even bought a Pro-Ject Speed Box (on Roy Hall's advice): it still spins faster. My cartridge is a Sumiko Blackbird. I really don't know what much else to do: any ideas? Did someone run into this problem?

I am desperate.
lrmellon
The main 'bearing' is located at the centre of the platter.The spindle pokes up from it and you place the part of a record with the hole in it,through it,to hold the record in place.You take the belt and platter off and take the thing that pokes up out of it's hole.You now have a hole that is empty in the middle of the turntable,that you put oil into.Coat the long metal piece(spindle)that moves in the hole (bearing)with oil as is reasonable for moving parts and place some oil in the hole (bearing) also.The tape trick may not be needed if you oil properly,but the tweak works and that is what is needed.
Thanks again, Stefanl. Now, I get it for sure (what I thought I understood is certain now). I will oil both the spindle and the main bearing with Mobil 1 (with teflon). I'll let you know what my results are.
After oiling the main bearing and the spindle, no change whatsoever. I give up.

I am going to buy a new turntable from another brand. I don't have the slightest clue why this is going on.

Thanks all.
Find someone with a multi-meter and check your voltage.
Better yet, locate a variac (voltage modifier), dial in 115 volts and see what happens.
Best of luck...