Serial number is on the big white label on the expansion header. Is this
the first time you have used the board in two years?

Gerald


On Tue, Dec 1, 2015 at 3:34 PM, William Hermans <yyrk...@gmail.com> wrote:

> So, I'm pretty sure there is a way to bypass the EEPROM check, and force
> the correct device tree board file. But I am not sure how to go about doing
> that. Plus, I'm not sure what else is involved. Maybe Robert can chime in
> and tell us whether what I'm thinking is a good idea or not ? As uboot has
> to know some things too . . .
>
> On Tue, Dec 1, 2015 at 2:29 PM, Bryan Hood <bnhrobot...@gmail.com> wrote:
>
>> Serial number is blank. I just see a large white rectangle to the right
>> of "S/N" on the bottom silkscreen.
>>
>> re: circuitco - I purchased it through Adafruit 2 years ago, so I don't
>> believe so.
>>
>> On Tue, Dec 1, 2015 at 1:12 PM, William Hermans <yyrk...@gmail.com>
>> wrote:
>>
>>> Is this a circuitco board ?
>>>
>>> On Tue, Dec 1, 2015 at 2:10 PM, Bryan Hood <bnhrobot...@gmail.com>
>>> wrote:
>>>
>>>> Oh wow! I have an answer. I went to go probe U7, the EEPROM, and
>>>> discovered that it has fallen off the PCB. All that was left was a single
>>>> pin dangling on a pad. I can see where the other chip legs used to be
>>>> soldered on.There must have been a defect during the SMT process.
>>>>
>>>> So my next question is, is there a way to get a programmed EEPROM to
>>>> fix my BBB? Can I get an RMA? Or should I just buy a new one?
>>>>
>>>> On Tue, Dec 1, 2015 at 1:01 PM, Bryan Hood <bnhrobot...@gmail.com>
>>>> wrote:
>>>>
>>>>> Here is my UART output:
>>>>>
>>>>> U-Boot SPL 2014.04-00014-g47880f5 (Apr 22 2014 - 13:23:54)
>>>>> Could not probe the EEPROM; something fundamentally wrong on the I2C
>>>>> bus.
>>>>> Could not get board ID.
>>>>> Could not probe the EEPROM; something fundamentally wrong on the I2C
>>>>> bus.
>>>>> Could not get board ID.
>>>>> Unknown board, cannot configure pinmux.### ERROR ### Please RESET the
>>>>> board ###
>>>>>
>>>>>
>>>>> On reset, the same message repeats. I'll probe the I2C bus and see
>>>>> what I can find.
>>>>>
>>>>> Bryan
>>>>>
>>>>>
>>>>> On Sun, Nov 29, 2015 at 10:40 PM, William Hermans <yyrk...@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Make sure your serial adapter is 3v3 ttl.
>>>>>>
>>>>>> On Sun, Nov 29, 2015 at 11:16 PM, Bryan Hood <bnhrobot...@gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi William,
>>>>>>>
>>>>>>> I tried flashing the eMMC as you suggested, but no luck. The LEDs
>>>>>>> never turned on, so I just waited a very long time. I'll work on getting
>>>>>>> the serial output next.
>>>>>>>
>>>>>>> Thanks,
>>>>>>>
>>>>>>> Bryan
>>>>>>>
>>>>>>> On Sun, Nov 29, 2015 at 7:44 PM, William Hermans <yyrk...@gmail.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Using a serial debug cable will give you a better idea of what's
>>>>>>>> going on. It will not always let you know exactly what the problem is, 
>>>>>>>> but
>>>>>>>> based on what you  get as output, someone here could give you a better 
>>>>>>>> idea
>>>>>>>> what's happening.
>>>>>>>>
>>>>>>>> Passed that . . .  try flashing this to sdcard, and booting from it.
>>>>>>>>
>>>>>>>>
>>>>>>>> http://debian.beagleboard.org/images/bone-debian-7.5-2014-05-14-2gb.img.xz
>>>>>>>>
>>>>>>>> This is an older image, and I have a good reason as to why you
>>>>>>>> should attempt booting from this. Older eMMC images can interfere with
>>>>>>>> newer sdcard images at boot. This should give you( us ) a better idea 
>>>>>>>> what
>>>>>>>> is going on. Typically though, with an older 1st, and 2nd stage boot
>>>>>>>> loader, if you press and hold the boot button at boot. the board 
>>>>>>>> should be
>>>>>>>> forced to boot from, and use the 1st, and 2nd stage bootloader from 
>>>>>>>> the sd
>>>>>>>> card, instead of attempting to use the boot loaders from the eMC . . .
>>>>>>>>
>>>>>>>> On Sun, Nov 29, 2015 at 7:45 PM, Bryan Hood <bnhrobot...@gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> I've got a beagle bone black that used to have debian on it, but
>>>>>>>>> it's been sitting on my desk unpowered for over a year. I recently 
>>>>>>>>> tried
>>>>>>>>> booting it, but the user LEDs won't turn on; only the power LED will 
>>>>>>>>> light
>>>>>>>>> up. I tried programming the on board flash, and booting from a microSD
>>>>>>>>> card, but no luck. Any suggestions? I've got tools at work to probe 
>>>>>>>>> the
>>>>>>>>> debug header, but I'm hoping it doesn't come to that. Thanks!
>>>>>>>>>
>>>>>>>>> --
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-- 
Gerald

ger...@beagleboard.org
http://beagleboard.org/

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