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Thorens TD 320 Power Supply
Thorens TD 320 Power Supply
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Old 15th January 2019, 03:14 PM   #11
Kay Pirinha is offline Kay Pirinha  Germany
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Quote:
Originally Posted by elwood625 View Post
I upgraded to a GBC rated at 1.25A instead of the original 100mA version with no problems.


...and with no improvements either, I'd guess?


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Old 15th January 2019, 03:32 PM   #12
elwood625 is offline elwood625  United States
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Actually it improved the speed variations that the speed control could not handle on my TD -321 MK2. I did need to readjust the 33 and 45 rpm speeds using the two pots on the speed control board. Now both 33 and 45 rpm are dead stable.
The TD-320 MK3 uses a 24 pole motor with improved speed control, the updated wall wart was only helpful when the local mains were fluctuating. I live a mile away from Fermi Lab, when they fire up the light dim.
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Old 15th January 2019, 03:49 PM   #13
elwood625 is offline elwood625  United States
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Default TD-320 info

adelcura - Here is info from my TD-320 Service manual. If your turntable has the Thorens arm, it has an auto shut off feature, this is the first page, the other two pages give electrical info and test point values.
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Old 15th January 2019, 03:53 PM   #14
elwood625 is offline elwood625  United States
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Default TD 320 scematics

Here are the two different schematics for the speed control unit and PC boards, you will need to match the schematic to your speed control.
I hope this helps you, these are outstanding turntables which will match almost any current VPI and are certainly better than any REGA, I know, I have a P8 with the NEO speed control.
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Old 19th January 2019, 03:51 PM   #15
Pars is offline Pars  United States
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Interesting info elwood! I have a TD320 (mkI) which I bought new back in the '80s and am going to put back into service in a bit. I always lusted after the mkII/III with the TP90 arm...
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