A tant melted on one of my KS-246361 boxes (I guess they're a similar age, possibly even the same source). The only one so far to have trouble. It failed in such a way that it continued to smoke and load up the power supply,
The current drawn from the no-name laptop power supply was still well within spec, at least by the time I post-mortem'ed it. But that melted too, and took out three levels of circuit breakers. The KS-24361 worked perfectly after replacing the cap. On Sun, Jan 31, 2016 at 4:42 PM, Bob Camp <[email protected]> wrote: > 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. > _______________________________________________ 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.
