When cycling on bumpy or rough roads, my Garmin Edge 305 powers itself down occassionally without command from me. I can always power it back up immediately but I've lost some data.
I moved the battery wires to the main board, bypassing the spring contacts. No doubt my warranty is voided but at least the thing works now.
Call Garmin (800.800.1020), they have labeled this as a "known issue" and are now replacing units for FREE! Just sent mine off.
I've done a repair along the lines mentioned in the Motionbased forum thread:
Using magnet wire (thin, coated, plastically deformable) to solder the battery leads provides a very reliable contact IMO - since I've fixed my Edge I've taken it on numerous hard bumpy mountain bike rides with good result.
The extra spacer adds some compression to the springs and improves the reliability of the contact. Besides the battery leads, also the USB contacts are guided through this connector to the GPS board, so you want to have this connector in good working order.
I've posted a bunch of photos and more detailed instructions on my site (below are a few)...
The problem is with the spring contacts between the two halves of the unit that carry power from the battery (back half) to the computer (front half). If your unit is outside warranty, you can follow instructions here: http://forums.motionbased.com/smf/index.php?PHPSESSID=000a201aaa94d328628ad489c9067181&topic=6566.msg42076 I did this, and it helped some, but I am still dropping power on very rough descents (like stairs), so I'm going to try adding a capacitor to the computer side so it can tolerate the brief disconnections from the battery. Making the contacts perfect seems to be a more daunting task.
I had the same problem an despite my edge being over 12 months old (18 I think) Garmin replaced it under warranty.
I've just rang them with the same problem in the uk and its £66.66 to replace outside of the warranty
Having a problem with the cadence sensor
I also expierenced the unit powering down at the slightest bump. Called garmin support (be patient) they told me it is a defect;send the unit back. In less than a week I recieved a brand new 305.thank you Garmin.
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The unit turns off on its own and I need to turn it on again (annoying!)
unit turns itself off
Same problem here. Frequent spontaneous power-downs for no apparent reason--bumpy roads not a necessary cause. This has made my 305 unusable. Reloading the latest operating system onto the unit had no effect. Neither did deleting all data from the 305. Plus, I bought my unit brand new from EBay, which automatically voids any warranty, according to Garmin.
same problem.
Does the same for me. Seems like a pretty poor design flaw given that it's a bike computer!
I get this, very frequently. Sometimes I can sail over rugh ground without a hicup, someties it just powers down when I'm stood still. Not impressed, I want to ride my bike, not nurse the computer
Unit first powered down by itself at the end of a road ride after going over some bumps (coincidence?). Notified Garmin, as the unit was still under warranty. Prior to sending out for repair, I downloaded the latest software. This appeared to fix the problem. Not so. The problem returned several months later. The unit is now out of warranty. I've notified Garmin again and I am awaiting my RMA return authorization number.
Same here- will try a software reset and see if that helps
My Garmin has started shutting off when hitting bumps. It has gotten worse. Today it shut off 6 times in 15 miles. Annoying!
My Garmin Edge 305 shuts off randomly. It doesn't matter if I hit bumps or not. It may shut off after 5 miles or 15 but I can't finish a ride without it shutting off.
I have exactly the same problem: uncommanded power down when I encounter a bump (using mountain bike). I can power up again immediately, but I have lost data and the power up is risky, as I need to divert focus from driving.
Had the same problem that gradually got worse after two years of regular use. I tried the repair solution and that worked well until the first time it got very wet and then water got in. Once that happened, I didn't want to go through the repair again, so paid for an out of warranty repair. They gave me what seemed to be a brand new unit. Two and half months in and that one has now started to fail in the same way!
Fortunately, just inside the 90 day warranty, but a hassle!
My shut-downs started after 3 months
I had the same problem, shuts off while in use , I bent up the spring connectors, now the power stays on but cadence goes out any answers? I replaced the battery in the sensor, and lined it up the ride light flashes still cadence works intermittently???
Same problem. Â It is getting worse and even happens on smooth roads now. Â Very frustrating.
Mine stops recording on its own.
Same trouble. Ruff road surface just keeps turning it off. Very, very frustrating. Have taken to putting it in my back pocket so I can at least get the information! Seems like Garmin should be sorting these out!
Unit power itself down with minimum vibration.
moved it from my mt bike (with suspension) to road bike - no suspension, would power-off at the smallest of bumps, 20 times (or more) in 10 mile ride. It will stay on fine in my back pocket, though.
I don't need to say much else. Same problem that everyone else is having. I love the product but hate having to power back up.
Mine just started doing the same thing
When on a ride (don't think I've noticed it on a run) the device turns itself off.
I'm also having a (possibly related?) problem that the device won't "see" the USB port, take a charge, download its data to the software, etc.
I have to wait DAYS to use it again... weird.
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