The variable resister must be available as I was quoted $400.00 for a
rebuilt AFM.

----------
>From: Automatic digest processor <LISTSERV@GERRY.VANAGON.COM>
>To: Recipients of vanagon digests <vanagon@GERRY.VANAGON.COM>
>Subject: vanagon Digest - 14 Jul 2003 - Special issue (#2003-712)
>Date: Mon, Jul 14, 2003, 6:43 PM
>

> Subject: Re: AFM resistance test
>
>
>> Been there, done that--
>> I would strongly suggest that you remove the AFM ( not difficult ), clean
> it
>> up in some gas, remove the cover, and carefully examine the thing. The
>> little white resistance element is clearly visible, and wear is readily
>> apparent. As you can see when you examine the critter, the resistance
>> increases ( or decreases ) in steps, rather than in a continuous manner. I
>> would love to locate a source for these elements, which were manufactured
> by
>> Bournes, a company that specializes in variable resistors.  It is this
>> critical component which fails. The rest of this ( rather expensive ) unit
>> will last forever.
>> Chuck