Subject:
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Problem with my handyboard
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 8 Feb 1999 01:46:15 GMT
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Original-From:
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Ameen Suleman <SULEMAN@antispamMHV.NET>
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Viewed:
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933 times
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My handyboard is dead. It happened when I was fooling around with the
expansion socket J3 and the LCD socket. I might have induced a short.
Now first here are the symptoms:
- I can download the pcode to the handyboard. It says the bootstrap was
successful. Later it even says that the download was successful. Then it
asks me to reset the board. When I reset the board, it says the board is
not
responding.
- The LCD has died as a consequence of the short. I have replaced the LCD
with another LCD from a working handyboard. Now the LCD only displays
blocks in the top row. This LCD still works in the working handyboard.
- I have taken out the memory chip and loaded it into the working
handyboard.
The memory chip works. The memory chip from the working handyboard
did not change anything on the dead handyboard.
Here are the options I think I have:
- Buy another 68hc11 chip and try it out - in case the 68hc11 chip in the
dead
handyboard is bad.
- Buy a bare handyboard pcb and populate it with components from the dead
handyboard using the assembly instructions. I can test as I go along as
indicated in the instructions. Sooner or later I'll come across the part
where
the components just inserted fail the test.
Is there a more intelligent way out of this?
Regards,
Ameen Suleman
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