Subject:
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RE: Hot serial interface board
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 16 Dec 1998 16:18:09 GMT
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Original-From:
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brett anthony <ANTHONYB@ECS.CSUSnomorespam.EDU>
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Viewed:
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1313 times
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<<snip>>
So here's my question. Does your serial interface board run hot, i.e.
noticeably hot to the touch. On my serial interface board (version 1.1 as
printed on the board) the white ceramic block gets very hot along with the
power chip? in the middle. If I had a bad power chip, would it cause these
symptoms, especially inconsistent performance!!!
BTW, how much was the power chips from Newark? Thanks for the help!!!
Bill Denzel
Your MAX232 chip may be bad, but you should also check or proactively
replace the four 10uF caps (C10, 11, 12, 13) which the '232 uses to generate
the 10V needed for serial comm. If one of these is flakey it could
interfere with serial comm and possibly fry the '232.
Brett Anthony
Equipment Technician
College of Engineering and Computer Science
California State University, Sacramento
Postal Mail: Brett Anthony
CSUS, E&CS
6000 J St.
Sacramento, CA 95819-6023
email: anthonyb@ecs.csus.edu
phone: (916)278-6253
fax: (916)278-5949
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