Re: [GrizHFMinimill] Re: Mill controller woes



The first thing you might want to do is change the speed control pot. Replace it with a better quality piece. I found my pot to be unreliable and bought a new one from Mauser Electric. Maybe another forum member can chime in with the part number for you.

--- On Sun, 9/4/11, chucketn <chunk07@comcast.net> wrote:

From: chucketn <chunk07@comcast.net>
Subject: [GrizHFMinimill] Re: Mill controller woes
To: GrizHFMinimill@yahoogroups.com
Date: Sunday, September 4, 2011, 10:35 AM



--- In GrizHFMinimill@yahoogroups.com, "chucketn" <chunk07@...> wrote:
>
> My X2 mill has started playing up again. First it started acting like the motor was cutting out during a cut. I checked all connections again. I even replaced the brushes. Now, under load or not the speed randomly jumps up to roughly twice the set speed. I can't afford to replace the controller now. Help! Is this the symptom of a fet going bad? I do believe I have some spares.
>
> Chuck in E. TN
>
More symptoms. Now the speed control pot/switch is intermittent. I can turn it off and the motor continues to run. Sometimes turning it of and on by the speed pot/switch has no effect and it runs at full speed.
Time to re-read the troubleshooting files again...

Chuck in E. TN



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