That's almost always caused by the thermal fuse on the outer PCB. They tend to open up due to aging. Just short it out... it was a ridiculous place to put a thermal fuse anyway.
-- john, KE5FX -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jack Hudler Sent: Sunday, January 14, 2007 12:00 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] Bad batch of HP10811's Who sold them? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Mark Amos Sent: Sunday, January 14, 2007 1:41 PM To: [email protected] Subject: [time-nuts] Bad batch of HP10811's Time-nuts, Seems like a bad batch of HP10811's was dumped on e-bay over the holidays... Some (at least 2) won't tune up to 10MHz: one won't adjust above 9,999,530 and the other peaks around 9,999,920 after warming up for a day or so. It seems to stay on frequency (albeit the wrong one...) I did some preliminary checks (internal reference voltages, OK, etc.) I'm thinking that it must be a bad crystal to be this far off. C'est une cause perdue? (I.e. did I buy a "parts" unit?) Mark _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
