[Elecraft] KX1 #978, odd AC ripple and resistance readings during 1st test

[Andrea Borgia]

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
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