I just had the same experience with my Teres. Any hints greatly appreciated. I sent an email to Chris at the Teres audio address; not sure if it's still active but if I hear back, I'll post.
TT Stops @ 1/3 Points on Records
Approx. 1/3 of the way into an album, and 1/3 of the way from the end of an album, my Teres 265 TT comes slowly to a stop (the motor turns off). It does not do it all of the time but it will do it at least once during a two hour session. I recently gave it a tune-up (checked all set-up measurements) and changed the oil so everything is to spec. What do you think?