Towertalkers:
One of the two Create RC5B-3 rotator boxes at the K4JNY/W4PA contest
station has quit on us. After a couple of months of trying to
troubleshoot it I am appealing to the masses for insight.
The push-pull output transistors and their driver appeared to be bad on
first inspection and we replaced them. Didn't make any difference.
Other checks to the box have indicated no problem, yet it's still not
working. Nothing burnt inside, nothing electrical we can find seems to
be amiss.
When attached to the rotator and power applied, the box powers properly
and the indicator needle swings of its own accord (as it is supposed
to). The box refuses to respond to the slider switch to turn even
though we have a signal from there. No rotation, no needle movement.
The rotator itself does work. Attaching the good Create box in place
of this one, we're able to turn it.
My in-house technical wiz (who has fixed Create before for me) is also
stumped. Any ideas? Or in lieu of that, who does Create servicing in
the U.S.?
Scott W4PA
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Visit the Tennessee Contest Group - www.k4ro.net/tcg.html
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