David Unruh
Junior
Posts: 7
From: Woonsocket, RI, USA
Registered: Apr 2019
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posted April 15, 2019 06:15 PM
Trying to diagnose my Sankyo 702 motor drive. I'm getting good power to the motor side of the board after the bridge rectifier. 36 volts dc. Looks like motor and main transistor are good, I can run a jumper between transistors brown trigger wire and red wire and it runs. But I'm not getting good voltage to that brown wire from the board, only about .9 volts. Are there any schematics for any of the Sankyo's and what the voltages should be?
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