I was using the (5V) DC Wall Adapter from gumstix.com as my power
supply, and was working in a room with no carpet. Despite this, I can
understand a possible failure due to ESD since I am not using a waysmall
case (although I'll probably buy one now).
Anyways, the order number is #609 (note that this is not under my name,
but a close friend of mine).
How long does it take for a gumstix to ship? I'm planning to order a new
one tomorrow morning.
Gordon Kruberg wrote:
> That is one of the power supply chips, and this definitely sounds like a
> damaged board; however, running a board overnight doesn't fry a board
> unless you are suppying with a voltage out of spec (over 6V)
> I haven't heard of one failing like this for a long time -- maybe 6
> months-- but IIRC, we have only seen that failure related either to
> putting a tweener on backwards (i.e. bad polarity on the connector) or
> accidental shorting the bypass or bulk caps while powered on.
> Here are some possible causes that can lead to a damaged board:
> 1. Is your setup adequately protected against shorts?
> 2. Is your setup adequately ESD-protected?
> 3. Is the power supply good?
> Can you find your order number, please? I'd like to track down the
> manufacturing history. BTW-- what are you doing touching the chips???
> (I'm keeping this on the mailing list because it should be useful for
> gumstix and general board-hygiene tips)
>> NOTE: Posting for an third time because my local time was previously
>> set to 2004,
>> sorry for the annoyance(s)...
>> I've been using the gumstix connex for the past two weeks with no
>> problems, but today I noticed that I can't get console over ttyS0 and I
>> am not able to ssh/see its webserver (which I can usually see since I
>> have a startup script to enable usbnet for a certain IP).
>> Anyways, I noticed that when i have my gumstix plugged into it's power
>> source (via a waysmall basix board), there is a small chip on the
>> gumstix connex, below an unsoldered ball grid array, that gets absurdly
>> hot (it burns my finger). Is it possible that this chip is the problem?
>> The chip is labeled with the Analog devices logo, and letters "L FE".
>> Does anyone know what this chip is for/why it might be burning?
>> In five minutes, I'll post a picture of the chip in question at
>> As far as my usage with the gumstix, I may have left it on for over a
>> day, and have been using it with a wireless CF card via the cfstix
>> expansion module. Would this have caused any problems?
>> Vivek G.
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