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    Hegner Scroll Saw - Motor speed control issue

    Hello, Thanks for the reply and warning. I’m only testing the speed sensor as suggested by Delta Prime and turning the motor by hand, not powered up.
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    Hegner Scroll Saw - Motor speed control issue

    Hello, I’ve tried connecting the sensor to my DVM but get no change in reading, on the mV scale there is a 0.1mV reading but I think that’s just noise. I get a bigger reading if I move the test leads. Nothing on the V (ac or dc), or when set to Ohms There are no markings on the sensor. Maybe an...
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    Hegner Scroll Saw - Motor speed control issue

    Many thanks for the reply Minder. I’m guessing the only way to see a square wave form is with an oscilloscope?
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    Hegner Scroll Saw - Motor speed control issue

    Hello, Many apologies for the length of time in replying but now Christmas is behind us I will hopefully have more time. Thanks for the replies but before I start desoldering components could someone tell me how to measure or check the motor spindle sensor is working correctly. Please see...
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    Hegner Scroll Saw - Motor speed control issue

    Thank you for your reply, I’ll do as you suggest and get back to you. I’ve added a couple more photos of the circuit board. Thanks again.
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    Hegner Scroll Saw - Motor speed control issue

    Hello 73’s de Edd, Many thanks for your reply. I believe the Hegner saw was built in 1994, as the serial no. is: 65377/94. Regards, Paul Hello Bluejets, Hegner via the UK agent have got back to me today with this message: I forwarded your picture over to Hegner and they have confirmed the...
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    Hegner Scroll Saw - Motor speed control issue

    Hello Bluejets, Hegner UK have replied to my email, it’ll take them till next week to give me an answer. I’ll keep you informed, Paul
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    Hegner Scroll Saw - Motor speed control issue

    Hello Bluejets and thank you for your reply, My scroll saw is: Hegner Multicut 2S Serial No: 65377/94. I’ll check with Hegner to see if I have the correct motor. Thanks, Paul
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    Hegner Scroll Saw - Motor speed control issue

    Hello, I’ve been given a Hegner scroll saw, which runs but when I turn the speed controller there is no change in speed. I‘m not very experienced at fault finding at component level and this why I’m asking for your help. The saw is powered by 230V AC and I’m little apprehensive fault finding...
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