Topic: Having a problem with your chumby One?
If they're still in stock, you may be able to purchase a replacement power supply at The Chumby Store
So, you looked at your chumby One today and it was off. You rebooted it and it started to boot, but then turned off again. What's going on?
Far and way, the most common failure mode for the chumby One is with the power supply. This particular supply fails in a peculiar way - if you put it on a voltmeter, it may still show 5V, but if you put it under load (as when you use it with a chumby), it will not be able to hold the required voltage.
As a chumby boots, it turns on various subsystems in sequence, each of which uses just a little more power. Some supplies will be able to provide enough juice to get through the early stages, but eventually fail. Some die right after attempting to turn on the display, some when the USB subsystem comes on, or when the network powers up, or most commonly, when the sound system is turned on for the "bloop bloop" chumby startup animation. Sometimes it will just turn off after some random period of time, or maybe when an alarm fires, and may even reboot itself.
So the question is - what now?
Well, there's no need to throw away the device - it's almost certainly just fine.
(Duane:next statement no longer true, we frequently have stock at thechumbystore.com) Unfortunately, I don't have any extra US power supplies - I have just enough to cover the few remaining devices still under warranty.
I *do* have a bunch of European power supplies, however, the cost and paperwork to ship them to Europe is prohibitive.
So here are the options:
1) If you need a European power supply I can ship it to any US address for the cost of shipping, and you can figure out how to get it to your country - for instance, you might have relatives or friends living or vacationing the US that can carry and/or send it home for you. Otherwise, look at the following options...
2) You can purchase a third-party replacement power supply. This "universal" power supply will work just fine. It's also available for a lower price here, though some users have reported they've received defective supplies from them (though they've been replaced). There may be other vendors as well - Google is your friend. There may also be a European version of this supply. The tip of the current supply is 0.9mm I.D. x 3.2mm O.D. (center positive), but the socket should handle a 0.8mm I.D tip, though it will be more snug.
3) You can find some other 5VDC, 2000mA (2A) power supply and splice on the tip from your current supply. This is a fairly simple operation, and these supplies are quite common - you can find them at pretty much any consumer electronics retailer, and you might even have some lying around your house from some device you love less than your chumby. It's very important to make sure it's at least 2000mA - that's key. The other thing to make sure of it that you wire it up correctly - the positive goes in the center of the connector. There are some forum posts on the proper way to do this kind of splicing.
If you find other power supplies that work, please add them to this thread so others can benefit from your experience.
There are other possible chumby One failure modes, though much less common:
1) I've seen a very small number of units where the USB subsystem itself has failed, so that it will no longer be able to access the network or even a USB dongle. That's a fatal failure.
2) The user has turned the brightness down to "off" and the Control Panel dutifully does that every boot - restoring factory setting will usually do the trick.
3) Somehow the mSD card in the device has become corrupt - usually that can be fixed by performing a USB firmware update, but sometimes requires opening up the device, removing the card, reflashing it from a desktop machine, then putting it back in. In the worst case, the card itself is defective - but you can just replace it.
4) The network card has come loose - that can be fixed by opening the device and reseating it.
If you have other words of wisdom for fixing a troublesome chumby One, please add to this thread.