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Platter not spinning micro seiki dd-1

T

TrevorBarten

Well-Known Member
It's obvious someone has already done something to the turntable. It looks like it has been converted from 110v to 220v but am not sure. The soldering looks somewhat poorly done which would lead me to believe someone who's inexperienced worked on this. Is there any quick test I can run to see what's wrong ? Or are there any obvious flaws in the wiring you guys can spot ? I wouldn't mind getting it repaired if need be, but a new motor would probably not be worth it. (Not to mention I can replace that myself anyhow). Another thing of note would be that the strobe light is on even if it's on off. It becomes brighter once turned on. I don't think this is originally supposed to be like that.
 

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More than likely the motor was sourced from JVC, looks pre Quartz locked. I would look on VE for service manuals from JVC from the same time period.
JVC (Victor) supplied the DD motors to Micro Seiki for the top models and probably for the lower models as well.
When Victor invented the Quartz Locked DD motor it went into the top models of Micro Seiki TT as well. They had a close alliance.

BillWojo
 
I think this is a Matsushita (Technics) motor. Also used in Pioneer PL-71, PL-55x and countless other mid-fi turntables.
 
On second closer look at image #5 it indeed looks like the voltage input had been converted to 220V at some stage with the original Japanese voltage wiring snapped with a cutter. I'm not sure the conversion is correct. The power supply EC's still look bad - some appear to be bulged.
 
stratokaster said:
I think this is a Matsushita (Technics) motor. Also used in Pioneer PL-71, PL-55x and countless other mid-fi turntables.
Click to expand...

Most likely something like that. I recently had a micro seiki dd 5 with a motor that was shot, and incidentally I had a marlux player lying around with the exact same servo motor. So I would assume it's just a standard model since the dd 1 was lower end than the dd 5.
 
tnsilver said:
On second closer look at image #5 it indeed looks like the voltage input had been converted to 220V at some stage with the original Japanese voltage wiring snapped with a cutter. I'm not sure the conversion is correct. The power supply EC's still look bad - some appear to be bulged.
Click to expand...

I am fairly certain atleast the transformer has been replaced. This one has 3 wires for the in part while the only other picture I could find had 4. It has also been taped to the player which is not something it has going for its authenticity.
 
That looks rather like the model sold in the US as a Tannoy/Micro TM44. I had one, and it was a very nice table, but after a couple of decades it got wonky.
There are some manuals for the Tannoy/Micros in the library at Vinyl Engine, and it might be worth looking.
 
TrevorBarten said:
I am fairly certain atleast the transformer has been replaced.
Click to expand...
I agree. I think the TT is suppose to operate on 18 to 24 VAC and originally had a dual voltage primary winding transformer. Locating a 120V replacement AC/AC transformer (not expensive) and replacing the old caps is a no big deal job for any home appliances tech. However, messing with the power supply could prove hazardous for an inexperienced DIY'er and could potentially escalate existing issues. Why not get a quote from a local lab?
 
tnsilver said:
I agree. I think the TT is suppose to operate on 18 to 24 VAC and originally had a dual voltage primary winding transformer. Locating a 120V replacement AC/AC transformer (not expensive) and replacing the old caps is a no big deal job for any home appliances tech. However, messing with the power supply could prove hazardous for an inexperienced DIY'er and could potentially escalate existing issues. Why not get a quote from a local lab?
Click to expand...
I probably will. Problem is that there aren't really any nearby so I would have to ship it which would cost me 20 bucks at the minimum. The dustcover and headshell are also missing so I doubt it would end up being worth the effort.
 
If you asked in Barter Town, or if where you are was visible in your member thingy to the left, local people with more experience might be able to help.
Incidentally, the reason the headshell is missing is probably that it, by itself, is worth more than the table. It is a very sexy looking headshell, and its acoustic properties are very good also, apparently. But the arm it left behind is a nice one, and the motor and platter, while not in the top league, are perfectly good. The lack of a dustcover is genuinely annoying, though often dustcovers affect the sound to the negative (though not as much as the cat deciding to walk across the rotating platter and arm).
Since you already have the table, seeing if you can get it up and running makes sense. To me, at least, since I don't have to do anything or pay the bill.
 
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