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Preston Microforce Knobpot


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#1 Andre Trudel

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Posted 29 June 2017 - 09:01 PM

Hi all,

 

Do any of you have experience with the older Microforce v+f? Mine has the old style knobpot from bourns with the "clockface readout". The arms on the dial stopped working. Have you ever been able to fix one of these yourself?

 

Thanks,

 

Andre


Edited by Andre Trudel, 29 June 2017 - 09:02 PM.

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#2 Dom Jaeger

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Posted 29 June 2017 - 11:02 PM

I haven't worked on one for about 15 years, but from memory it's a sealed unit. You might be able to pry the window off and see if you can access the arms but I suspect your best bet is simply to replace the whole knobpot. That's what I used to do if one stopped working.


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#3 Andre Trudel

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Posted 30 June 2017 - 01:58 PM

Thank you Dom.

 

I know Preston swapped those knobs for plain, no-dial knobs long ago. The pot on my microforce still work so it's not a big deal.

 

Cheers.


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