[GreenKeys] How hot is too hot? (Teletype 32)

[Andy KN4UCL]

 Hey Jeff - I did a modification to some of the resistors to change from 60
to the 40ma loop current (European) standard used by i-Telex. Apart from
the heat, it seems to run i-Telex just fine 😁  Attached is a better photo
(red circle where things are hot) ... cheers!

[image: IMG_9582.JPG]


On Mon, Sep 5, 2022 at 10:42 AM Jeffrey Golas <jeffg at junknet.net> wrote:

> Can you take another pic but zoomed out/farther out?  That looks a lot
> different than Im used to, I think.
>
> Considering how new those boards look I think youre fine, some of the ones
> I have are baked to golden brown lol. All depends if the loop current is
> set properly.
>
> Jeff
>
> > On Sep 5, 2022, at 10:37 AM, Andy KN4UCL <kn4ucl at gmail.com> wrote:
> >
> > 
> > Hey folks, I recently got my M32 up and running on i-Telex and all is
> good but things are getting a little toasty and I am not sure how much I
> need to worry.  Please see attachments - the circles I drew show where it's
> getting hot.  120-130F if my Harbor Freight thermometer is to be believed.
> >
> > As there is quite a bit of room in there, I was wondering if a small fan
> would be helpful.
> >
> > Any thoughts appreciated!
> >
> > thanks
> > Andy
> >
> >
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