I think you should see about 1V at pin 2. Since it's nearly 0, my guess
is that D2 (3.9V zener) is missing or burned out, or there is a short
somewhere around to GND.
Roman
W dniu 2016-02-09 o 21:30,
jw_dewdney@yahoo.com [PolySix] pisze:
> [Attachment(s) <#TopText> from jw_dewdney@yahoo.com [PolySix] included
> below]
>
> curious how when I post from the tablet (ipad) the post happens
> instantly - whereas posting from the computer (firefox) takes about an
> HOUR to show up... weird!
>
> here is my result from the LM393 (IC5) - the rest forthcoming
>
>