Re: [Gumstix-users] Power surge on USB Hub....uhoh

[Areth Foster-W. <ar...@ar...>]

It is a Basix 400XM.  I actually noticed that something was wrong when 
it was attached to just the tweener and the wall socket.  With that 
configuration the little ic on the opposite side of the hirose got 
really hot and burned my finger.  I unplugged it, disconnected the wall 
power and the tweener and plugged it into the GPSstix 2 with just USB 
attached (thinking it was an issue with wall power) I felt the chip and 
it heated up again and I got the USB power surge message.  I am afraid I 
burned that little IC out (I think it is marked TP10 or U32) out and now 
have a permanent short...which would suck...although I have had my eye 
on the 400xm-bt.
-Areth

Dave Hylands wrote:
> Hi Areth,
>
> On 2/11/07, Areth Foster-Webster <ar...@ar...> wrote:
>   
>> I think something went very wrong.  I just plugged in my gumstix to the
>> computer and got a message about a power surge on the USB hub.  Also the
>> 8 pinned IC on the opposite side of the hirose connector was insanely
>> hot.  It seems as though I have a short but I can't figure out where.  I
>> unplugged it immediately. Any suggestions?
>>     
>
> What board do you have?
>
> Were you powering via USB or via the wall wart?
>
> If you happen to be using the breakout-gs or audiostix2, and you're
> NOT powering via USB, you may need to remove a ferrite bead, This is
> mentioned here:
> <http://docswiki.gumstix.com/Isolating_USB_from_VBatt_on_Audiostix2_or_Breakoutgs>
>
>