> For some weird set of circumstances, > all three units failed withing 1 week.
Were they running at the time? Any chance you overloaded the overly sensitive inputs with an unattenuated 1PPS pulse? > The 5370B's were much worse off. > It seems that they both suffer from failures > in the U24,25,26 chips on the Arming board. What are the symptoms that lead you to these chips? Does any part of the 5370B still function with the arming not working? > Unfortunately, the two units are not identical > and I cannot cannibalize one to fix the other. What S/N prefix are they? > What I can do is use some chips from the 5370A > to fix the older model 5370B. > > So(at last) my question is: > > Should I do this? > > I am very hesitant about breaking a perfectly > good 5370A which has seen much good service. Yeah, I'd keep the working 5370A as is and wait for a 5370 parts unit to show up. /tvb _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
