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Raphi

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My electronic sprinkler controller got a few stations not responding.
Opening the box, there is a microcontroller and a batch of what looks
like SMD triacs (?) connected to the output port. the markings on
these show the Motorola logo and '929 AC 4HMD' or '934 AC 4HMD' .These
are surface mounted. Can't find it anywhere. Any one with a tip ?
 
Raphi wrote:
My electronic sprinkler controller got a few stations not responding.
Opening the box, there is a microcontroller and a batch of what looks
like SMD triacs (?) connected to the output port. the markings on
these show the Motorola logo and '929 AC 4HMD' or '934 AC 4HMD' .These
are surface mounted. Can't find it anywhere. Any one with a tip ?
Click to expand...
Yup. Reset it. In my case, it was 1) disconnect all power
2) wait at least 1 hour 3) reconnect power and test. This
was per the manufacturer's help line. It worked like a charm
after the reset.
 
ehsjr@bellatlantic.net wrote in message news:<4088A9B7.BDDA8D6A@bellatlantic.net>...
Raphi wrote:

My electronic sprinkler controller got a few stations not responding.
Opening the box, there is a microcontroller and a batch of what looks
like SMD triacs (?) connected to the output port. the markings on
these show the Motorola logo and '929 AC 4HMD' or '934 AC 4HMD' .These
are surface mounted. Can't find it anywhere. Any one with a tip ?

Yup. Reset it. In my case, it was 1) disconnect all power
2) wait at least 1 hour 3) reconnect power and test. This
was per the manufacturer's help line. It worked like a charm
after the reset.
Click to expand...

try http://www.datasheetarchive.com
 
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