[SignalOne] CX-7A repairs

Ron.K3PID ron.k3pid at sbcglobal.net
Sun Mar 14 13:22:02 EDT 2010


Congratulations Rodger! FB on the CX-7A restoration. The readout board in my CX-7A has been a source of trouble since I got it about 15 years ago. I thought about replacing it with a "modern" 7 segment LED readout but haven't worked up enough frustration to tear into it. It has been my experience ( for what it's worth ) that the nixie tubes are pretty reliable but the driver IC ( SN7441AN) isn't. I've also had problems with the circuit board. It doesn't handle multiple solder/desolder jobs and the trace peels right off...

73 es GUD LUCK
K3PID Ron H
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