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D-100 won't spin disc

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Post time 2021-10-11 01:57:51 | Show all posts |Read mode
Hello,
I've bought an untested d-100 discman as a repair project, and it worked for a day or so, sounding beautiful through line out, though it skipped sometimes.
And then it stopped, I suspected the middle gear and sure enough it was frozen up and fell apart when I was removing it.
So I ordered a 3d printed one, took the whole thing apart and replaced it. While I was there I lubed the turntable spindle with watch oil, cleaned the belt and everything, pulled the motor mount outward before tightening, lubed the gears with rc cars lithium grease, as per manual..

But then when I start it up the disc won't turn. The display lights up, the laser sled moves up and down a bit, but it feels like the belt is slipping, though I don't really know. When I rotate the motor spindle the turntable turns, even when I apply some small friction to it. I tried cleaning it again but the disc won't move. When I help it a bit by pushing it from the underside it starts spinning, but it feels sluggish and it just turns off.
I am at a loss now. Can you help?

Thanks,
Marko.

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Post time 2021-10-12 09:21:32 | Show all posts
Sorry to hear your story.
When you hit the play, the laser should return to its zero point which is very close to spindle motor, the laser hits the limit switch and stops. Then, the lens inside of the laser focuses up and down for 3 times to search a disc. If finds the disc, the player enters playback mode.

You'll check:
1: 4pin flexible cable has broken wires?
2: The D10 cannot read a disc when it's bottom side up. You'll place it at least vertical.
3: You can ship it to me for final repair if you cannot make it work.
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 Author| Post time 2021-10-12 15:04:40 | Show all posts
It's okay, I haven't given up yet..
4 pin flexible cable is ok.
The laser sled moves towards the motor until it hits the limit switch and then it moves outward just a little.
The lens focuses to search for a disc.
But the disc won't turn, and something is making some strange noise.
That's why I suspected the motor and/or the belt.
The belt was kind of hard and was holding the shape where it was in when I took it out.
But it still moved the turntable when I rotated motor spindle. And the disk starts turning when I give it a little push through MD cover hole, but it seems that it is slower than it should be and it shuts off.
So, could it be the motor?
Can I apply external power to the motor to see if it works and moves the turntable? What voltage does it need?
This is my first attempt at discman repair, so I don't expect much, but it's fun, and it's a beautiful machine.
I would gladly send it to you, but the cost of shipping would make it too expensive for me I live in Serbia and we have totally different standards here (you wouldn't believe how much I paid for it : ))
Thanks.
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