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 05:15:46 GMT
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Viewed:
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1364 times
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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.
f.
In your message you said:
> In lugnet.robotics.handyboard, Fred G. Martin writes:
> > re: this problem with the memory contents not persisting, check the
> > separate power supply to the RAM (U14). you might need to remove all
> > socketed ICs from the board 'cause power can bleed to chips via input
> > pins.
>
> Yes, that was indeed the problem. Upon removing all the ICs, the power
> to U14 disappeared. What could cause this, a blown fuse at F1?
>
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Message has 2 Replies:
 | | Re: handy board troubles...
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| (...) 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! (25 years ago, 22-Mar-00, to lugnet.robotics.handyboard)
| | | Re: handy board troubles...
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| This isn't technically a Handy Board problem as my code is being run on a Rug Warrior look-alike. However, I suspect that the same problem I'm experiencing would happen on my Handy Board if eviscerated one of my other robots and tried it. (...) (25 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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