Subject:
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Re: handy board troubles...
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 22 Mar 2000 07:03:55 GMT
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Viewed:
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1403 times
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In lugnet.robotics.handyboard, Fred G. Martin writes:
> that's possible, it's easy enough to test (just check continuity
> across F1).
>
> more likely that U14 croaked. is there batt pwr on its input side.
I traced the lack of power to a dead wire between C5 and pin 28 of U14;
soldering a small piece of wire between these connections fixed it.
Thanks, everything works perfectly now!
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Message has 1 Reply:
 | | Re: handy board troubles...
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| great, that's excellent! the key trick was pulling all the socketed chips. it's a weird but true fact that chips that don't have valid logic supplies can draw power in from their inputs pins (when the inputs are high) and operate off of that leeched (...) (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
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