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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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I thought I would pass along my “fix†for a non-functioning auto-stop on my Thorens TD-145mkII. It will also work for the TD-145, as it’s the same assembly.
Background: After re-wiring and reinstalling my tonearm, the TP16mkii, I discovered that the auto-lift function no longer worked. At the end of a record, in normal operation, the acceleration of the tonearm in the playout groove, and automatically shuts off and lifts the tonearm. Nice for us lazy people.
Fix: In my case, quite easy. All that was needed was a flat head screwdriver and a Phillips head screwdriver.
1.)Remove the plyboard panel underneath the TT so you can access the tonearm assembly. It’s held in place by 4 screws in each corner.
2.)Very, very carefully, remove the small 1†x 2†white plastic housing for the tonearm wiring/assembly. A small Phillips head screwdriver is needed. The reason you want to be careful is that this is where the terminal junction of the very fragile 33AWG tonearm sits.
3.)You’ll immediately see a beige colored round disk. There is a small set screw with a dab of blue paint on the top of this beige disk. In my case, I did not have to adjust this disk. Apparently, the adjustment on this disk is factory set and very precise, so I was glad not to have to mess with it.
4.)Across from the beige colored round disk, is a white plastic “inductor†assembly. Back and forth adjustment of this assembly is with a simple set screw using a Phillips head. You want to adjust it such that the distance between the metal piece on the beige colored round disk (above) is a very tiny 0.4mm from the ceramic “block†on the white inductor assembly. Heck, I just did it by site, but I guess a feeler gauge would work very well here. Be careful, however, you don’t want to loosen the screw too much or you’ll have to reinstall the inductor. Loosen the screw just a tiny bit, so you can slide the assembly back and forth.
5.)If that doesn’t do the trick, you may have to adjust #3 above such that the metal tab lines up more directly with the ceramic block on the inductor assembly. As I said, I did not have to do that.
Finally, put everything back together. Be careful putting that plastic housing back in place. In particular, make sure that all of the 33AWG wires are safely tucked away and not pinched anywhere. (I learned that the hard way once!).
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Topic - Repairing the Auto Shut-Off function on Thorens TD-145 MKII - TedR 07:24:38 10/13/09 (0)
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