577 CT Collector Voltage Knob needed.


Mlynch001
 

I am looking for the collector voltage control knob for a Type 577 curve tracer. P/N is 366-1026-00. Does anyone have a spare one that they would be willing to part with? Let me know if you can help.

Thanks!
--
Michael Lynch
Dardanelle, AR


tom jobe <tomjobe@...>
 

On 8/9/2019 7:33 AM, Mlynch001 wrote:
I am looking for the collector voltage control knob for a Type 577 curve tracer. P/N is 366-1026-00. Does anyone have a spare one that they would be willing to part with? Let me know if you can help.

Thanks!


Mlynch001
 

On Fri, Aug 9, 2019 at 10:59 AM, tom jobe wrote:


Are any of these knobs what you are looking for?
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=tektronix+577+knob&_sacat=0




On 8/9/2019 7:33 AM, Mlynch001 wrote:
I am looking for the collector voltage control knob for a Type 577 curve
tracer. P/N is 366-1026-00. Does anyone have a spare one that they would be
willing to part with? Let me know if you can help.

Thanks!
Tom,

I saw those in my search, Unfortunately, not what I need. The one that I need is the collector voltage adjust on the left side of the instrument, directly below the CRT . I searched E-bay, Sphere, Qservice and came up with nada. I did search the forum here as well as all the usual sources before I posted this request.
--
Michael Lynch
Dardanelle, AR


Dave Daniel
 

Is the one on your 577 missing og broken? If broken, what is “broken” about it.

DaveD

Sent from a small flat thingy

On Aug 9, 2019, at 12:14, Mlynch001 <mlynch002@gmail.com> wrote:

On Fri, Aug 9, 2019 at 10:59 AM, tom jobe wrote:


Are any of these knobs what you are looking for?
https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=tektronix+577+knob&_sacat=0




On 8/9/2019 7:33 AM, Mlynch001 wrote:
I am looking for the collector voltage control knob for a Type 577 curve
tracer. P/N is 366-1026-00. Does anyone have a spare one that they would be
willing to part with? Let me know if you can help.

Thanks!
Tom,

I saw those in my search, Unfortunately, not what I need. The one that I need is the collector voltage adjust on the left side of the instrument, directly below the CRT . I searched E-bay, Sphere, Qservice and came up with nada. I did search the forum here as well as all the usual sources before I posted this request.
--
Michael Lynch
Dardanelle, AR



Mlynch001
 

On Fri, Aug 9, 2019 at 11:55 AM, Dave Daniel wrote:


Is the one on your 577 missing og broken? If broken, what is “broken”
about it.

DaveD

Sent from a small flat thingy
Dave,

Appreciate the reply. The plastic outer "knob" has broken off the aluminum hub. So I still have the aluminum part of the knob attached to the shaft. This is the typical old TEKTRONIX knob failure. At this point, this is purely cosmetic, but for aesthetic reasons, I would like it to be a good knob.


--
Michael Lynch
Dardanelle, AR


Dave Daniel
 

Michael,

Ok. I wrote because Chuck Harris recently posted a method for repairing the plastic part of a knob and then melting the aluminum core back into the knob.

I think that there are master parts lists for various categories of Tektronix parts available online, perhaps on this forum. Having been involved in moving for about a year, I haven’t paid much attention to them but perhaps they list the instruments which use each part. I know that there is a parts list for knobs; search the forum for “rpr”.

DaveD

Sent from a small flat thingy

On Aug 9, 2019, at 14:12, Mlynch001 <mlynch002@gmail.com> wrote:

On Fri, Aug 9, 2019 at 11:55 AM, Dave Daniel wrote:


Is the one on your 577 missing og broken? If broken, what is “broken”
about it.

DaveD

Sent from a small flat thingy
Dave,

Appreciate the reply. The plastic outer "knob" has broken off the aluminum hub. So I still have the aluminum part of the knob attached to the shaft. This is the typical old TEKTRONIX knob failure. At this point, this is purely cosmetic, but for aesthetic reasons, I would like it to be a good knob.


--
Michael Lynch
Dardanelle, AR



Mlynch001
 

Dave,

Yes, I read Chuck's post about repairing knobs. I wish I had some plastic to work with. I did refer to that 366-RPR on TEKWIKI and found that the Knob that I am looking for is not very common. Used on 576, 577 and several TV/Video products and a few plotters. That RPR section is an excellent resource for those who have not yet used it. Tons of great information, I have just scratched the surface of that section of TEKWIKI..

--
Michael Lynch
Dardanelle, AR


Vince Vielhaber
 

I didn't see Chuck's post, but you can get plastic in liquid form from Smooth-On.com. Wear an shop apron or old shirt when mixin, don't ask how I know! SmoothCast 300 should do the job fine. 1:1 mixing, you have a few minutes to mix and pour, whether it's a few drops or something large, cured and ready in about 15-20 mins.

I've made many knobs and feet with it and repaired many things that glue just wouldn't hold. If you're using it for something external, you can color it.

Vince.

On 08/09/2019 03:29 PM, Mlynch001 wrote:
Dave,

Yes, I read Chuck's post about repairing knobs. I wish I had some plastic to work with. I did refer to that 366-RPR on TEKWIKI and found that the Knob that I am looking for is not very common. Used on 576, 577 and several TV/Video products and a few plotters. That RPR section is an excellent resource for those who have not yet used it. Tons of great information, I have just scratched the surface of that section of TEKWIKI..


Mlynch001
 

Sadly, I don’t have anything to use as a pattern. The entire plastic part of the knob is gone. One of these days I will try that casting material, it sounds like it would do the trick if you had a pattern.

--
Michael Lynch
Dardanelle, AR