Any service info on Denon DP-30L turntable?

[Steve A.]

This is a direct drive table which I have been using to rotate records as I clean them- I kinda figured that I might kill it in the process, and I think I did!

The motor has lost all torque- the "get up and go" seems to have "got up and went"...

There are 3 leads going to the motor, but I have no idea what voltage is being supplied.

Actually if the motor itself is still good (the windings looked clean and didn't smell burnt) I might just want to power it with a constant voltage supply since actual speed is not important.

There is a fancy circuit board with maybe 50 components- I believe it's main function is to supply a controlled AC voltage to the TT motor.

BTW the numbers on the motor are:

C30830507C
2178036 205

... which I suspect makes it 30 years old.

Any help on this particular TT, and on Direct Drive turntables would be greatly appreciated!

Thanks!

Steve Ahola

P.S. Here's picture I just found looking for information on this:

http://img138.imageshack.us/my.php?i...ict0462wn2.jpg

.

[Enzo]

I just had a friend bring in a Denon direct drive table last week. I looked at it a bit and gave it back to him... sorry.

I think it is like the Technics ones, the motor is like a stepper, there are three sets of coils and they are sequentially driven. It is not a straight motor where voltage or freq control it. I suspect one of your drivers has died, so it is like a three-cylinder car engine running on two.

Kinda like three-phase.

At least that is what I think. I could be wrong.

[Steve A.]

I just had a friend bring in a Denon direct drive table last week. I looked at it a bit and gave it back to him... sorry.

I think it is like the Technics ones, the motor is like a stepper, there are three sets of coils and they are sequentially driven. It is not a straight motor where voltage or freq control it. I suspect one of your drivers has died, so it is like a three-cylinder car engine running on two.

Kinda like three-phase.

At least that is what I think. I could be wrong.

I thought I added this but I guess I didn't:

"AC servo motor with speed servo by frequency and phase servo control"

Whatever THAT means...

I think it is time to go with Plan B. (Which is basically ANYTHING but Plan A...)

Thanks!

Steve Ahola

[Enzo]

OK, then I was wrong.

[Steve A.]

I noticed that some of the record cleaning machines run at 18 RPM so I googled that and came up with this hit:

http://www.amazon.com/Dayton-Paralle.../dp/B000TK98OA

From the drawing it looks like the shaft is 3.12 mm in diameter which is roughly 1/8"...

I'll see if I can hunt down something with a larger shaft.