[neonixie-l] Nixichron woes

My Jeff Thomas Nixichron has been misbehaving. It's worked flawlessly for years. Lately (4 mo?) it's had a hard time keeping a GPS lock, so much so that the GPS coordinates would be wrong when displayed. Sometimes just a little, sometimes a lot. Then it would get a lock and seem to work fine f

[neonixie-l] Nixichron woes

My Jeff Thomas Nixichron has been misbehaving. It's worked flawlessly for years. Lately (4 mo?) it's had a hard time keeping a GPS lock, so much so that the GPS coordinates would be wrong when displayed. Sometimes just a little, sometimes a lot. Then it would get a lock and seem to work fine fo

Re: [neonixie-l] NixiChron Slow to Acquire Satellites

> Well, as soon as I emailed out, the GPS started blinking fast and the > NixiCron is back in business... GPS receivers have a concept of an "ephemeris", which is basically the orbits of the GPS satellites in view and information about them. It uses this for a "warm start", so once it gets the

[neonixie-l] NixiChron Slow to Acquire Satellites

Hi! After a very long hiatus of being off, I powered up the NixiChron. The GPS module, a Haicom HI-203E, blinks at a very slow rate, which means no solid satellite acquisition. Normally, at some point, it would start blinking faster, indicating a solid acquisition. Due to this, the NixiChron bo

[neonixie-l] NixiChron thinks it's 04 16 00, at least for today...

Hi. I have one of Jeff Thomas' NixiChron's, acquired in 2005. It's since had the MCU replaced in 2008, along with the latest grounding circuit modification. In 2009, it had the tendency to lock up and emit a high pitched sound intermittently, but that has stopped. In 2010, after unplugging

Re: [neonixie-l] Nixichron down - can you help me?

> On Sep 24, 2019, at 10:39 AM, Frenchyled wrote: > > Terry Bowman : "Beat me to it. I have rigs for both low voltage DC and mains > AC. The secret is to use ANALOG meters for both voltage and current. Where I > used to work we could tell what component in a PS had failed just by watching > t

Re: [neonixie-l] Nixichron down - can you help me?

> On Sep 23, 2019, at 4:16 PM, gregebert wrote: > > Electrolytic caps can dry-out and become near-short-circuits. It's not > common, but I have had that happen to me once. > Also look for signs of overheating on the PC board. If you have to replace an electrolytic that's in a warm place use a

Re: [neonixie-l] Nixichron down - can you help me?

Electrolytic caps can dry-out and become near-short-circuits. It's not common, but I have had that happen to me once. Also look for signs of overheating on the PC board. Voltage regulators are pretty robust; many of the common ones (such as the LM78xx series) shut-down when overloaded (overheated

Re: [neonixie-l] Nixichron down - can you help me?

Your clock needs to have its parts checked individually for shorts. This usually involves desoldering things. I fixed one of those clocks once, took a couple hours of surgery to repair the PC board where it had developed a carbon track under the HV switch FET. On Mon, Sep 23, 2019, 9:30 AM Frenc

[neonixie-l] Nixichron down - can you help me?

I am wondering if someone could help me to solve my Nixichron problem. Today, after 3 weeks off I plugged in my Nixichron again and my breaker then jumped :( My power adaptor (220V/12V) is dead. I used another one but my clock don't work anymore. I disassembled the clock and checked the 1,5A fu

Re: [neonixie-l] NixiChron upgrade, new firmware, NixiChron style case...

I’ve got a handful of Nixisat and Nixichron clocks all of which could use modern GPS upgrades. My cylindrical acrylic Nixisat has been down for a few years because the original GPS board died, and it’s just been sitting in storage. Is the firmware update from John Miktuk? What is the version?

[neonixie-l] NixiChron upgrade, new firmware, NixiChron style case...

Hi All, Only a few Nixichron upgrades are left. I have three ready to go, and a few more boards to be assembled. I may order more toward the end of the year, but it won't be an ongoing business, for sure. A new firmware release is ready. Some minor bugs were squashed, a few options were added

Re: [neonixie-l] Nixichron

Thank you Dieter! Nick On Mon, Aug 18, 2014 at 9:07 PM, Dieter Waechter wrote: > sent by mail > Dieter > > - Original Message - > *From:* Nicholas Stock > *To:* neonixie-l@googlegroups.com > *Sent:* Tuesday, August 19, 2014 5:40 AM > *Subject:* [neonixie-l

Re: [neonixie-l] Nixichron

sent by mail Dieter - Original Message - From: Nicholas Stock To: neonixie-l@googlegroups.com Sent: Tuesday, August 19, 2014 5:40 AM Subject: [neonixie-l] Nixichron Hi Folks. Does anybody have a schematic of Jeff's nixichron? I have the owners manual etc with my

[neonixie-l] Nixichron

Hi Folks. Does anybody have a schematic of Jeff's nixichron? I have the owners manual etc with my clock, but no schematic... Thanks, Nick -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails fr