Technics SL-1200 MKII Bearing Problem


I think I have a problem with the bearings on a Technics table I just bought used. The tonearm doesn't swing fluidly. It has a tendency to pull back to a position a little to the left of the arm rest.

The anti-skate seems to be ok. Any thoughts? Is it hard to replace the tonearm?
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Mine did the same. I don't think you have a bearing problem. I believe the tension of the cables is what pulls the arm back. But...I'm NOT positive.
Does the arm pull back when the anti skate is set to zero?

Is the table level?
I'd ask this question of Kevin Barret of KAB. He's the Technics 12xx authority.
Mine has done that for about a year. It doesn't bother me and the tonearm plays and tracks just fine.

Still, if you talk with Kevin at KAB, I'd be interested to hear what he says.
After fiddling with it for a few hours, I've taken it to a repair shop. I'll let you know what the results are.

Tvad - I have the anti-skate set to zero, and that's why the movement of the arm on its own is bothering me. It should float freely at zero. And the table may not be absolutely level, but it's definitely level enough for the arm to not drift as quickly as it does.

I have a feeling that Lindisfarne is on to something with the cables causing tension. It does look like an invisible hand is pulling the tonearm back to a settling point, whether I pull it to the right of the settling point or the left.

-Dusty
I think it's something to do with the antiskate mechanism. Mine does the same thing, but when I set the antiskate to 6g, the tonearm drops into the armrest as it should. When the tonearm is positioned anywhere else (with the cueing lever up) though, it pulls the tonearm noticeably outward. What I've found is that the antiskate setting that works for playing records causes it to drift inward when lowering into the tonearm cradle.
I thought the anti-skate only pulls in one direction (away from the platter) to counteract the centripetal force of the rotating record? If this is the case, then it should never pull the arm back toward the platter, as it does when I move the arm to the right of the arm rest.
07-07-08: Heyitsmedusty
I thought the anti-skate only pulls in one direction (away from the platter) to counteract the centripetal force of the rotating record? If this is the case, then it should never pull the arm back toward the platter...

That was my thought as well. The anti skate should never pull the tonearm toward the spindle. Its purpose is to counteract centripetal force, and push the tonearm away from the spindle.
I took it to a professional, and it's fixed, basically. If I balance the tonearm at zero, set the anti-skate to zero, and then pull the tonearm over to the spindle it still drifts back to the edge of the platter, but much more slowly now.

I guess this is normal?