Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
To add in some small manner to what Bob Camp said: IIRC, the input is polarity protected by a diode or two. I think the input to the brick is floated; i.e. neither of the two power leads is connected to ground. The brick can be disassembled, if you're careful. The components, except for the transformers are pretty standard stuff. On one of my units, I had a blown cap and diode. It is SMT, though, so you'd need expertise in working with that. I find it hard to believe that the brick was blown, though. Have you verified that you're powering the correct pins? Bob From: Bob Camp To: Discussion of precise time and frequency measurement Sent: Sunday, February 5, 2017 9:53 AM Subject: Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102 Hi The power “brick” is a pretty standard Lucent part. The show up from time to time on the surplus market. The gotcha is that you may be able to buy a KS box for less than the asking price for the power brick. There are no schematics on these devices other than what some people have traced out here and there. The input to the power brick is simple enough that it’s probably worth simply tracing out on the board. That will involve pulling the board completely out of the chassis (which is a pain). Once it’s out, some quick ohm meter checks between the power inputs and the labeled pins on the power converter will give you a pretty good idea of what goes where. There *might* be a pc board mounted fuse on there somewhere …. Bob > On Feb 4, 2017, at 8:54 PM, Roland Wm Buzz Ude wrote: > > I,m brand new to this forum. I need your help. While powering up a KS-24361 > set of units for the first time, my power plug for P1 was wired incorrectly!. > Pin one (P1) was plus 24 VDC; Pin three (P1) minus 24 VDC--this > should have been pin two Tried same connection on both L101 and L102, no > activity of any kind. Where does pin three (P1) connect. I may have trashed > both units. Are schematics available. Thanks W8BUZ > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > ___ > 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. ___ 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.
Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
See https://www.febo.com/pipermail/time-nuts/2014-October/087670.html Pin 1 is Plus, pin 2 is Minus to an isolated power supply. All other pins have no connection. Hence, no damage. Schematics are not available, but many people have discovered what it takes to make them work. Time nuts is an adventure, but it's best to check the pipermail/time-nuts archive for previous work. Good fortune on your quest for knowledge. Bill Hawkins ___ 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.
Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
There's a surface-mount fuse on the back of the board. But pin 3 seems to show no leakage to other pins. I'd be surprised if connecting it has caused any damage. Have you tried reconnecting it correctly ? On Sun, Feb 5, 2017 at 3:53 PM, Bob Camp wrote: > Hi > > The power “brick” is a pretty standard Lucent part. The show up from time > to time > on the surplus market. The gotcha is that you may be able to buy a KS box > for less > than the asking price for the power brick. > > There are no schematics on these devices other than what some people have > traced > out here and there. The input to the power brick is simple enough that > it’s probably > worth simply tracing out on the board. That will involve pulling the board > completely > out of the chassis (which is a pain). Once it’s out, some quick ohm meter > checks between > the power inputs and the labeled pins on the power converter will give you > a pretty > good idea of what goes where. There *might* be a pc board mounted fuse on > there > somewhere …. > > Bob > > > On Feb 4, 2017, at 8:54 PM, Roland Wm Buzz Ude > wrote: > > > > I,m brand new to this forum. I need your help. While powering up a > KS-24361 set of units for the first time, my power plug for P1 was wired > incorrectly!. Pin one (P1) was plus 24 VDC; Pin three (P1) minus 24 > VDC--this > > should have been pin two Tried same connection on both L101 and L102, no > activity of any kind. Where does pin three (P1) connect. I may have trashed > both units. Are schematics available. Thanks W8BUZ > > > > --- > > This email has been checked for viruses by Avast antivirus software. > > https://www.avast.com/antivirus > > > > ___ > > 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. > ___ 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.
Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
Hi The power “brick” is a pretty standard Lucent part. The show up from time to time on the surplus market. The gotcha is that you may be able to buy a KS box for less than the asking price for the power brick. There are no schematics on these devices other than what some people have traced out here and there. The input to the power brick is simple enough that it’s probably worth simply tracing out on the board. That will involve pulling the board completely out of the chassis (which is a pain). Once it’s out, some quick ohm meter checks between the power inputs and the labeled pins on the power converter will give you a pretty good idea of what goes where. There *might* be a pc board mounted fuse on there somewhere …. Bob > On Feb 4, 2017, at 8:54 PM, Roland Wm Buzz Ude wrote: > > I,m brand new to this forum. I need your help. While powering up a KS-24361 > set of units for the first time, my power plug for P1 was wired incorrectly!. > Pin one (P1) was plus 24 VDC; Pin three (P1) minus 24 VDC--this > should have been pin two Tried same connection on both L101 and L102, no > activity of any kind. Where does pin three (P1) connect. I may have trashed > both units. Are schematics available. Thanks W8BUZ > > --- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > ___ > 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.
Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
Am 05.02.2017 um 04:29 schrieb Hal Murray: b...@baylorhill.com said: Where does pin three (P1) connect. I may have trashed both units. Are schematics available. I don't know of any schematics. I would take it apart and see if anything is connected to any of the other pins on those connectors. Or measure the resistance from the outside. I also know of no schematics, but I took some photos when I made the 10 MHz output and the distribution amplifier for mine. The power input seems quite simple. Everything goes straight into the DC/DC converter. Probably the input is not referenced to ground. There are just some chokes and a reservoir capacitor. There is a diode, too. It looks too weak for use as a crowbar or as a series diode. < https://www.flickr.com/photos/137684711@N07/31906174553/in/album-72157662535945536/ > (GPS board removed) regards, Gerhard ___ 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.
Re: [time-nuts] Power Problems Lucent KS-24361, L101 & L102
b...@baylorhill.com said: > Where does pin three (P1) connect. I may have trashed both units. Are > schematics available. I don't know of any schematics. I would take it apart and see if anything is connected to any of the other pins on those connectors. Or measure the resistance from the outside. -- These are my opinions. I hate spam. ___ 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] Power Problems Lucent KS-24361, L101 & L102
I,m brand new to this forum. I need your help. While powering up a KS-24361 set of units for the first time, my power plug for P1 was wired incorrectly!. Pin one (P1) was plus 24 VDC; Pin three (P1) minus 24 VDC--this should have been pin two Tried same connection on both L101 and L102, no activity of any kind. Where does pin three (P1) connect. I may have trashed both units. Are schematics available. Thanks W8BUZ --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ___ 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.
