Your the winner - filter cap open - 407 picofarads (suppose to be 1500 microfarads !)
Jean-Louis Oneto wrote: > Hi Brian! > Last time I had this problem, it was the VERY BIG capacitor (1500MFD - > 40VDC) which measured as 21.8pF (yes PicoFarad!!!) > Jean-Louis Oneto > OCA GEMINI - Avenue Copernic - 06130 Grasse - France > Tel: (+33)[0]493.40.53.80, Fax: (+33)[0]493.40.53.33 > e-mail: [EMAIL PROTECTED] > ----- Original Message ----- > From: "Brian Kirby" <[EMAIL PROTECTED]> > To: "Time Nuts" <[email protected]> > Sent: Wednesday, May 02, 2007 9:54 PM > Subject: [time-nuts] 5087A Distribution Amplifier > > >> I bought an HP 5087A distribution amplifier off of ebay. "The unit is >> in good working condition". Funny the power supply is putting out 120 >> hertz square waves.....which makes all the outputs look like they are >> oscillating garbage....disconnecting the power supply from the load does >> not change the situation. I subbed a test power supply and the >> amplifiers work fine. >> >> Does anybody have the schematic to just the power supply and could I >> bother you to scan it and send to me, or a link to get it, or the manual ? >> >> The power supply looks very simple, but the schematic sure makes life >> easier ! >> >> Thanks in advance - Brian N4FMN - [EMAIL PROTECTED] >> >> >> _______________________________________________ >> 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
