If you put a clothes pin as this photo shows, does the buzzing go away?
http://www.vintagecomputer.net/teletype/teletype_ASR33_clothespin-test.jpg
If so, then you may need to adjust a screw somewhere.  You may have an
"incomplete" ready mode (just a little chattering when current loop is
closed).
Bill

On Fri, Oct 14, 2016 at 4:25 PM, Brad H <vintagecompu...@bettercomputing.net
> wrote:

> I found it.  It`s this thing:
>
> https://drive.google.com/open?id=0B4pq0-BHd2x6Und4QVJQdGoyaFE
>
> I can actually see it trying to engage when I plug in.  That is
> *definitely* where the noise is from.   If I rotate the motor with it on,
> the noise changes depending on where the rotation is at.
>
> -----Original Message-----
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of william
> degnan
> Sent: Friday, October 14, 2016 1:18 PM
> To: General Discussion: On-Topic and Off-Topic Posts <
> cctalk@classiccmp.org>
> Subject: Re: ASR 33 buzzing
>
> It would actually be coming from the motor not the reader.  The motor for
> the papertape reader is either in the pedestal (if your ASR is on one) or
> somewhere in the UCC-6 (the power supply).  You have to follow the cable
> that comes from the reader along the rim of the chassis.
> B
>
> On Fri, Oct 14, 2016 at 4:12 PM, Brad H <vintagecomputer@
> bettercomputing.net
> > wrote:
>
> > Good question.  I only thought motor because it seemed like the noise
> > was from back there.  And when I put a plastic tool against the outer
> > casing, I could feel a vibration.  But now I'm wondering about that
> > paper tape reader.. when I listened to the noise again it did kinda
> > sound like it might be coming from over there.  It's kind of diffuse.
> >
> > -----Original Message-----
> > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of
> > william degnan
> > Sent: Friday, October 14, 2016 1:05 PM
> > To: General Discussion: On-Topic and Off-Topic Posts <
> > cctalk@classiccmp.org>
> > Subject: Re: ASR 33 buzzing
> >
> > stupid question - you're certain the motor is making the buzz and not
> > the reader motor or somewhere on the UCC-6?
> > Bill
> >
> >
>
>

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