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Old 23rd Jun 2022, 9:21 am   #18
SiriusHardware
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Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 11,548
Default Re: Dead commodore 4040 disc drive

Measure the resistance between the black and white wires soldered to the filter, first with the unit mains switch turned OFF, then with the unit mains switch turned ON. What resistances do you see?
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