Ole I will guess that without the pack the bus voltage may go high and that they also used the pack as a filter cap. So you should be able to find a free manual on one of the sites. KO4BB is a good guess. It may be as simple to start as a 10,000 uf cap to get going. The oscillating relay may be 60 Hz. Best of luck those are nice units. Regards Paul WB8TSL
On Wed, Feb 18, 2015 at 12:46 PM, Ole Petter Ronningen <olep...@gmail.com> wrote: > Hello > > On a whim I purchased an Austron 1250A off of eBay, "tested for power on > only". I somehow doubt they told the whole truth there, as the unit makes a > *very* noticable buzzing sound when powered on! > > The sound comes from a relay on the regulator board, oscillating wildly. I > have a hunch that this might be because the NiCad batteries are stone dead. > Has anyone experienced this relay going nuts?` > > Also, the manual gives clear warning not to operate the unit with the > battery pack removed, but gives no reason.. Does anyone know why this might > be a bad thing? > > Thank you! > OleP > _______________________________________________ > 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.