Subject:
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Broken Charger/Interface board--last chapter
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Mon, 28 Jan 2002 11:48:30 GMT
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Viewed:
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6314 times
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Well, it looks like reparing this charger/interface board is beyond me. I
have now replaced all the capacitors, both 'lytic and not, and the MAX 232.
I'have even been able to get an original Max232CPE. But the board doesn't
work still. I get a different set of voltage readings, though. I now have
about half the voltages required on the pins of the Max232 (i.e about +6V on
pin 2 and about -5V on pin 6). This leads me to think that there is
something wrong to the new capacitors, or perhaps the Max232 is defective.
But I won't go through the process of de-soldering and resoldering new
parts, I may be causing more damages than anything else.
Unless enlightenment strikes overnight, I will send the board back to
Patrick Hui in Hong Kong and leave the job to a professional...
Stefano
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