+thorsnrh Posted June 29, 2009 Share Posted June 29, 2009 I am new to geocaching, so I bought a used gps unit. It's an etrex vista (the old version.) The first time I took it out, it seemed to do ok. But now (2 weeks later) it can't seem to find any sattelites most of the time. Did I mess something up? Or is it just old and worn out? Thanks in advance for your help!! Quote Link to comment
+fratermus Posted June 29, 2009 Share Posted June 29, 2009 Try with fresh batts, and leave it outside on the back porch or something for a while. It may be able to get all the data it needs. The satellite constellation changes all the time, so you will be able to see different numbers of birds at any given time. Quote Link to comment
+briansnat Posted June 30, 2009 Share Posted June 30, 2009 The unit doesn't have the greatest reception. You should get a lock OK under a clear sky but will have trouble under a leaf canopy. To help, first turn it on well before you plan to use it. For instance turn it on when you leave your house and put the unit on your dashboard so it gets a good lock. Next be sure to keep it held flat, face up to the sky AT ALL TIMES. Quote Link to comment
+thorsnrh Posted June 30, 2009 Author Share Posted June 30, 2009 After new batteries and a half hour in the yard, I was able to mark my home coordinates. But by the time I got "home" typed in, I lost the signal completely. I have not been able to get a signal in trees at all...nearly got lost last week while cacheing...couldn't get a signal to point me back to the car. Does anyone else have this unit? Is it working for you? Quote Link to comment
+thorsnrh Posted June 30, 2009 Author Share Posted June 30, 2009 Oh, yeah...this unit also thinks it is December '94, according to the calendar. That changes sometimes, but it doesn't upgrade to a current date, even with good satellite reception. The calendar doesn't really matter to me, but maybe indicates a deeper problem?? Quote Link to comment
+lekum Posted June 30, 2009 Share Posted June 30, 2009 Oh, yeah...this unit also thinks it is December '94, according to the calendar. That changes sometimes, but it doesn't upgrade to a current date, even with good satellite reception. The calendar doesn't really matter to me, but maybe indicates a deeper problem?? If the date is updated when having satellite reception but is lost when turning off the unit, it means that the internal lithium cell that keeps the clock and satellite constellation data is totally discharged. This button batery is not easily replaceable, as you have to open your GPS unit. Regards, Quote Link to comment
+fratermus Posted June 30, 2009 Share Posted June 30, 2009 (edited) Hmmm. Let's try the "secret master reset", as we appear to have little to lose. This is achieved by simultaneously holding down the "Page, "Enter" and "Find" buttons while powering up. You have to hold all buttons in for about (5 to 7 seconds? 10 seconds? until reboot?), and you DON'T get the warning message, but when the machine finally restarts, it is fully reset. It may take many minutes (or another .5 hour outside again) to get good lock again but a google search suggests this has worked for others in a similar situation. Others have suggested that leaving WAAS off on this model can help it avoid this problem situation in the future, but nothing is confirmed. Edited June 30, 2009 by fratermus Quote Link to comment
+JBnW Posted June 30, 2009 Share Posted June 30, 2009 To the OP, I sent you an offline message. I had an eTrex Vista that did the same thing. Garmin gave me a program called 'timeset' to reset the clock. See the email and let me know. Cheers! Quote Link to comment
+admo1972 Posted June 30, 2009 Share Posted June 30, 2009 I had the same unit as you, and had similar problems. Doing that super master reset solved the "can't find any satellites" issue, and fixed the time as well. For a while anyway. Quote Link to comment
+Entropy512 Posted June 30, 2009 Share Posted June 30, 2009 Oh, yeah...this unit also thinks it is December '94, according to the calendar. That changes sometimes, but it doesn't upgrade to a current date, even with good satellite reception. The calendar doesn't really matter to me, but maybe indicates a deeper problem?? If the date is updated when having satellite reception but is lost when turning off the unit, it means that the internal lithium cell that keeps the clock and satellite constellation data is totally discharged. This button batery is not easily replaceable, as you have to open your GPS unit. Regards, This is typically the only thing in a GPS that will "wear out". Some of the older Garmins (like the GPS 45 in the early 1990s) were dry nitrogen filled to facilitate achieving their waterproofing rating, these units would degrade over time in terms of waterproofness. Newer waterproof Garmins just use aggressive rubber gasketing to my knowledge - the Oregon is definately not dry nitrogen filled. Quote Link to comment
+thorsnrh Posted July 1, 2009 Author Share Posted July 1, 2009 Well, the "secret reset" seems to have helped, at least some anyway. Thanks for that trick! The calendar is fixed, and it seems to pick up sattelites quicker now. I took it out for a short walk today to try it--still lose reception under tree cover but I guess I can blame that on older technology. Are newer units better under trees? I live in Minnesota, lots of trees here!! I'm sure I will upgrade at some point, after I'm completely hooked! Quote Link to comment
+fratermus Posted July 1, 2009 Share Posted July 1, 2009 Yay! Glad it helped. I was reading some more and some folks say that a later firmware may also help keep the problem away. Keeping sat lock under tree cover is not so much a new v. old thing as it is a normal chip v. high-sensitivity chip thing.* High Sensitivity chips do a much better job getting/keeping lock in challenging GPS situations. There is a Vista H version now, for example, and the H in there stands for High Sensitivity. frater mus *Although the market seems to be moving to HS chips almost by default. Quote Link to comment
+thorsnrh Posted July 3, 2009 Author Share Posted July 3, 2009 Thanks for the help. I've learned a lot. I'll definately do some research, and probably upgrade soon! Happy hunting!! Quote Link to comment
+Night Stalker Posted July 4, 2009 Share Posted July 4, 2009 When you look to upgrade you might want to take a look at the 60CSX. This has been the standard for geocaching the last few years and should be affordable. Quote Link to comment
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