Please Help T3F problems

I gather you sourced the information referenced by Raul in his post above, which takes you to Soundfountain, and Soundfountain provides some valuable info on the mechanism, and a diagram of the works, if you follow the path on Sf. The results you got with the arm disconnected might just mean that disconnecting the arm confuses the servo as to where the arm is in its path to the spindle. Info on the Sf website indicates there are two motors, in both the Rabco SL8 and SL8E. We might assume that the T3F resembles the SL8E, since it post-dates the latter Rabco. Anyway, the motor to drive the pivot toward the spindle is evidently housed in a small black box that rides on the rail. The second motor apparently has only the job of raising and lowering the arm wand. (You probably know all this; I am just thinking out loud.) If you haven’t already seen the diagrams on Sf, then maybe it can help.

I googled "Rabco tonearm owners group" and found this group on Lenco Heaven:

https://www.lencoheaven.net/forum/index.php?topic=18696.0

Those Lenco guys are very helpful.  There are more such sites, if you care to google the topic I put in quotations above.

Thanks lewm.

I'll check it out this afternoon.

Les

Seems like one of those guys on the Lenco thread(s) actually fixes Rabco tonearms for other owners.  That's where I would start, if you don't get any DIY hints from other reading.

Thanks again lewm.