Hello everyone, This is my first posting to Time-Nuts so please bear with me if I don't have the proper etiquette.
I guessed that many members here have the HP5370A(B) counters. I have 1 5370A and 2 5370B. For some weird set of circumstances, all three units failed withing 1 week. The problem in the 5370A turned out to be contact problems in the Power up relay. After much cleaning I was able to get the unit back up and running. 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. Unfortunately, the two units are not identical and I cannot cannibalize one to fix the other. 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. BTW, I can't find replacement chips anywhere on the net. Many thanks, George Hrysanthopoulos, N2FGX _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
