Subject:
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Re: Problem with RCX
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 28 May 2006 14:19:56 GMT
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Viewed:
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2179 times
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In lugnet.robotics, Robert G Fay wrote:
> "steve" <lego-robotics@crynwr.com> wrote in message
> news:44792D84.80803@airmail.net...
> > If all else fails, I'd pull the RCX completely apart (it's not hard
> > to do - and there are instructions out on the web someplace) - see
> > if there is any more gunk to clean out and look for any foreign
> > bodies rattling around in there.
>
>
> http://www.ozbricks.com/bobfay/rcx.htm
Thanks to everyone on the thread for your advice. I did open up the RCX and did
not find any more battery gunk. Everything looked okay, no obvious signs of
damage. Since this is a newer unit, the battery tabs are soldered to the board.
If I place a meter on the + and - terminals, it shows a short. If I place a
meter on the output of the voltage regulator and - terminal it shows open. So I
believe the problem is downstream from the voltage regulator. The large 1000uf
Cap looks fine, no bulging or leaking. I don't think there is a way to test
in-circuit. Anyway, I will call Lego on Tuesday and see what they say.
Thanks again,
Louis Davis
PS - I will post back to the list with the results.
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Message has 1 Reply:
 | | Re: Problem with RCX
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| (...) I wanted to let everyone know that I was able to fix my RCX and tell you what was wrong with it. There was a bridge between the positive terminal pad and a very thin portion of the ground plane along the outer edge of the PCB. Apparently the (...) (18 years ago, 2-Jun-06, to lugnet.robotics)
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