Hi I had one that took out the internal fuse once every 3 to 5 years. After replacing the fuse 3 times, the supply died. Go figure … only 15 years or use.
Bob > On Jan 31, 2016, at 9:11 AM, paul swed <[email protected]> wrote: > > As I mentioned in the another thread this week. > You can indeed replace the failed voltage with just another inverter. > Mine has run this way for 10 years. Mine was a 5 by the way. If it was one > side of the +/-15 I would say you want to replace both. > The entire switcher can be replaced with supplies that work off of 110 so > you can get rid of the 48 volt supplies. > Good luck > Paul > WB8TSL > > On Sun, Jan 31, 2016 at 12:04 AM, Alex Pummer <[email protected]> wrote: > >> power supply runs for a while, output current increases, but voltage stays >> correct -> problem is in the load circuit, load circuit working for a while >> load current increases, but it recovers after pause -> look for some >> tantalum capacitor in the load circuit, they recover often a few times >> before they finally die, >> KJ6UHN >> Alex >> >> On 1/30/2016 6:21 PM, Artek Manuals wrote: >> >>> My Z3801A began to die over the last few days. It would work for an hour >>> or two then produce a receiver error and communications problems. Turn it >>> off, let it sit awhile, back on and it would start the survey and then >>> begin to recover. Tonight it finally went dead with high current on the >>> main input . The feed supply has a 2amp current limit so I have not blown >>> the two 3amp fuses >>> >>> I have a schematic of the supply reverse engineered by Stefan Hegnauere a >>> few years ago (thank you very much) and a limited theory of operation >>> description so I am not totally dead from a troubleshooting point of view >>> although if one of the DC-DC converters is dead then I will likely have to >>> scrap the supply >>> >>> Questions >>> 1) Any prior experience as where to look first I checked the >>> electrolytics and at first glance they seem fine, no loss of magic smoke or >>> any parts obviously hot or bulging. ESR 's look good on those >>> 2) Will this supply function unloaded while I troubleshoot it on the >>> bench out of the unit? >>> 3) Anyone tried independent powering the Z3801? looks like two 5V >>> supplies and +/- 15V..not hard to to do >>> 4) Anyone with a good supply from a parts unit want to part with same? >>> >>> Dave >>> NR1DX >>> ArtekManuals.com >>> >>> >> _______________________________________________ >> 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. _______________________________________________ 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.
