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Old 11-17-2021, 06:30 PM   #28
cyclones
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Join Date: Feb 2010
City & State: Ames Iowa USA
Line Voltage: 120VAC 60Hz
Posts: 69
Default Re: Motor control board repair

Quote:
Originally Posted by cyclones View Post
I tried it in the machine with everything connected and the -15V was missing.
I just connected my DC power supply to the middle pins of SR3 (where the AC is supposed to go) and supplied 20 volts and the -15V rail comes up.
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