Suggest that you disconnect the switch and run 50-100 ma DC through the contacts push on and off a number of times. This should clean them. Low current such as you suggest may not effectively keep them clean over the years. Did wonders on a SRS FS700 I have. Regards Paul WB8TSL
On Tue, Dec 28, 2010 at 3:17 PM, Magnus Danielson < [email protected]> wrote: > Fellow time-nuts, > > The last couple of days I have been experiencing problems with my HP5372A > as it will not power up. I have noticed that my power switch is cranky but > haven't thought anything about it, just one of those annoying personalities. > > As everything else seems fine in the unit, I was suspecting the power > switch. It's just that it actually doesn't switch much power. It's a > low-power DC power enable switch. So just shorting it on the right side > enables the switching supplies and it "opens up". > > So if one encounters similar behaviour on a HP5371A, HP5372A or HP5373A, do > have a look at the power switch signals. They are easy to access on the back > side of the front panel (fairly obvious three fairly neatly soldered in). > > I'm not sure I can find a suitable replacement. I will see if it is a > mechanical problem that can be overcome with some patience. > > Anyway, the counter itself is intact. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
