P.S. The red LED comes on fine, and I don't see blinking yellow LED when 
trying to normally power up. I am just powering it from USB, and no 
external power (although I have had external 12V power to the board 
previously).

Richard

On Tuesday, April 8, 2014 7:23:57 PM UTC-6, Richard Wright wrote:
>
> I have read several posts, but haven't found my exact symptoms yet... I 
> have 2 different IOIO OTG modules from Sparkfun that I have been using. 
> Nothing strange has happened to fry them (I have fried IOIO's before, so I 
> know what that looks like...), but they have stopped responding. I am able 
> to get them into bootloader mode just fine and talk to them with IOIODude, 
> and even upgrade/change the firmware. However, when they boot normally, 
> they come up as 'Unknown Device' in Windows, and show no VID or PID.
>
> Is this normal (i.e. boot mode and IOIODude works, but normal boot 
> doesn't) for when the VReg is burned out? Or am I experiencing some other 
> problem?
>
> Richard
>

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