Hello.
Hot on the heels of my previous report, here comes the next one relating
to the first test phase.
Executive summary: it works! Unit came up with E10 as expected, display
brightness and timeout setting are ok and led shines pretty brightly.
Digging a little deeper, however, there are a few details on which I'd
like to hear your opinions:
-page 26, resistance checks: quite a few of those that had to be greater
than 10k gave an infinite reading (U1 pin 2, 6, 7, 9-12 and 15; U3 pin 1
and 8) and some of those that should have been greater than 1k were
indeed greater, only very much so! (e.g., U1 pin 4 was 140k). Is that
normal?
-page 28, ac voltage checks: I'm getting readings in excess of 20V (yes,
volts instead of millivolts!). A cursory reexhamination of the boards
confirms capacitors' polarities are correct and solder joints appear to
be fine (i.e., not always beautiful looking, but reasonably good
considering I'm
It may be worth mentioning that my friend Nicola IZ4FTB and I were using
an AMM (yes, one of those old-fashioned cutie things with the fancy
swinging needle ;-) whose battery really should be replaced, fast!
Next week, we'll get a DMM and repeat the tests before proceeding
further, but in the meanwhile I'd like to hear your thoughts on these
issues, especially considering that the little rig that could apparently
does and quite fine, thank you! 8-)
B73,
Andrea.
P.S.: pictures will soon appear on my website.
--
Homepage: http://andrea.borgia.bo.it / Amateur radio: IZ4FHT
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
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