This is quite a difficult problem to explain properly but it's driving me crazy!
I recently purchased a lenco direct drive turntable and yesterday I set it up with a preamp into my stereo.
Everything seemed fine until I started noticing something very very weird. About 2/3 times per side of an LP there will be a very quick tempo glitch. It's like not even half a second but enough to be very noticeable.
Its a brand new turntable and I've tried new and old records to see if I can work it out but it seems totally random.
Im a bit new to all this so if anyone can think of something to sort this id be beyond grateful!