Control Circuit For Excercise machine
 

The simple electronics on my old ProForm Air Stepper has failed. The
electronics control a very small motor/drive gear which simply tightens a
belt on a flywheel. Low power stuff.

There are 2 modes: programmed and manual. Programmed, which takes the user
through 10 or so adjustable sliders failed a year ago. Manual, which is a
single adjustable slider, failed last week.

Board says "FOX BIKE" but no id numbers. No bad solder joints that I can
detect.

I see that there are 2 identical circuits composed of [my guess] a
transistor and an SCR [both TO-92 cases] which power the drive motor. I
surmise that one was for the programmed mode, the other for manual.

I'd like to replace these components but am stumped.

The final drive device is labled "A934 RH" [Or could be 4934 RH], the other
device is labled "C 2060 RG."

Mouser cataloge and the internet failed to help me.

Can anyone tell me what these devices are and/or substuitutes?

Thank you.




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Control Circuit For Excercise machine
 

John Keiser wrote:
The simple electronics on my old ProForm Air Stepper has failed. The
electronics control a very small motor/drive gear which simply tightens a
belt on a flywheel. Low power stuff.

There are 2 modes: programmed and manual. Programmed, which takes the user
through 10 or so adjustable sliders failed a year ago. Manual, which is a
single adjustable slider, failed last week.

Board says "FOX BIKE" but no id numbers. No bad solder joints that I can
detect.

I see that there are 2 identical circuits composed of [my guess] a
transistor and an SCR [both TO-92 cases] which power the drive motor. I
surmise that one was for the programmed mode, the other for manual.

I'd like to replace these components but am stumped.

The final drive device is labled "A934 RH" [Or could be 4934 RH], the other
device is labled "C 2060 RG."

Mouser cataloge and the internet failed to help me.

Can anyone tell me what these devices are and/or substuitutes?

Thank you.




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They are 2sa934 and 2sc2060

Control Circuit For Excercise machine
 

Thank you very much!

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