Gallery, Projects and General > How do I??
Mini lathe motor. Once again.....
John Rudd:
Thats a KB controller.....
You got a multimeter/dvm and know how to use it?
First check is to see if you got 12v at the brass pad marked 12v on the board, just above P3...
Connect your meter neg lead to the spade lug marked I1....I'm sure that is the reference point for voltage measurements.....
Else you could check that the big resistor R17 reads about 10-15k ( power off!!!) on your meters ohms range (20k)
Stilldrillin:
John.
I checked, between the 12v brass pad, and P1.....
Initial reading was around 35v.... Steadily reducing to around 7v.....
Then, after some 20sec, to zero......
I next checked, the big grey, blobbed, lump. Power off. (Thank You!).....
A reading of, 18k. As best I can tell, on my meter......
John Rudd:
No.....no...no...
You need 12v between the 12v pad and I1...
Stilldrillin:
--- Quote from: John Rudd on December 23, 2017, 10:21:48 AM ---No.....no...no...
You need 12v between the 12v pad and I1...
--- End quote ---
Oh! Ermm? .... Ah! ... I can, now, see I1 in the pic. Why couldn't I see it, on the board?? :bang:
So sorry, John.
An initial, higher reading. Dropped to a steady 4v. Only..... :(
Brass_Machine:
--- Quote from: Stilldrillin on December 22, 2017, 11:02:46 AM ---
--- Quote from: Brass_Machine on December 22, 2017, 10:54:39 AM --- Finding the pot is a pita!
--- End quote ---
The speed control? How so? :scratch:
Or..... Do you mean, locating, a new pot?
--- End quote ---
Locating a new one....
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