Joe Good to hear that you recovered the 5061. A couple of comments. Ground screws do indeed oxidize and it can be a very good fix for older gear to simply loosen and re-tighten those screws or to replace pop riveted terminal lugs with real screws and lock washers.
Nicads My experience with modern nicads are they are real crud.I spent $45 for a new set from a major supplier and they lasted a year before starting down the failed path. I believe that any nicads on the shelf are getting pretty old these days. Other amazing thing is I have tested those 30 year old nicads and amazingly they really do hold up very well. So someplace along the line the manufacturers figured out how to make them a re-occurring revenue stream. Granted today there are alternates to those evil nicads. So perhaps they have a respectable life. Regards Paul. WB8TSL On Sun, Feb 26, 2012 at 8:24 PM, J. L. Trantham <jlt...@att.net> wrote: > Not being able to suppress my interests for too long, I explored my newly > acquired 5061A this weekend. > > The problem was an oscillation in the A7 assembly, as determined by looking > at the output at A7J6. > > I am not sure what I did to fix it but I removed all connections to the A7 > and A8 assemblies, reconnected them, and no joy. > > I then removed the A7 assembly, checked the components that have frequently > failed in the past on my other 5061A's, found no problems, loosened all the > mounting screws for the PCB then re-tightened them, cleaned all the > connections, reinstalled it, switched the 'HI' and 'LO' switch back and > forth half a zillion times, left it in 'HI', adjusted the 2nd Harmonic to > '40' on the meter, and, magically, everything worked. > > I suspect the problem will be back. I suspect a 'marginal' connection or a > marginal component in the A7 assembly. I have some 'parts units' available > for the next time the unit fails. > > Nonetheless, it has 'locked' for the past hour with a Beam I of about 13 > nAmp, if my calculation is correct (-131.50 mV from the CS tube as > connected > to the cable from the tube to A7J1 and as measured with my Fluke 8050A with > a 10 MOhm input resistance), and the output is 'locked' on my scope with > it's trigger coming from my TBolt. > > I have ordered new batteries for the Option 02 battery pack although it > even > worked with only one 'dead' cell. I replaced the 'dead' cell with one that > 'kinda works' from another old battery pack, and now even the backup > battery > pack is working, 'kinda'. > > Happy to answer any questions. > > Joe > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of J. L. Trantham > Sent: Wednesday, February 22, 2012 9:25 PM > To: 'Discussion of precise time and frequency measurement' > Subject: Re: [time-nuts] 5061's on ebay > > I'll do it. > > I work full time and this is my hobby. So, it may be a while before I get > into it though. > > Joe > > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of paul swed > Sent: Wednesday, February 22, 2012 9:22 PM > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] 5061's on ebay > > Interested > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.