3.3 Volts is generated inside the OSD3358 by a TI TPS65217C PMIC die   
PMIC stands for Power Management IC
You can read the TI data sheet on the TPS65217C
But the OSD3358 is a multi-chip module, so not too much you can do, other 
than replace the entire OSD3358, if damaged.
And that would require BGA (Ball Grid Array) rework capability.
--- Graham

==

On Saturday, August 1, 2020 at 5:54:02 PM UTC-5 Jeff Albrecht wrote:

> On Saturday, August 1, 2020 at 2:45:33 PM UTC-7 Jeff Albrecht wrote:
>
>> On Thursday, July 30, 2020 at 6:49:03 PM UTC-7 Jeff Albrecht wrote:
>>
>>>
>>> I found @jadon Jason Kridner github beaglbone-blue repository 
>> <https://github.com/jadonk/beaglebone-blue> with Eagle files. Then found 
>> a fork that is probably more authorities as it seems to have several newer 
>> changes, and well Beagleboard :-). beagleboard / beaglebone-blue 
>> <https://github.com/beagleboard/beaglebone-blue> 
>>
>>
> How is 3.3V created?
>
> I have some experience with KiCad and DipTrace however very little 
> experience with Eagle.
>
> I figured out how to highlight the 3.3V net, is there any kind of show 
> origin command? 
>
> I've exported the parts list and the Netlist. In the parts list there is 
> 5VREG and 6VREG I searched on just '3.3' finding only one part L3 3.3 
> uH.What generates the 3.3 vdc? What is the origin of the 3.3 VDC?
>
>  - Jeff
>
>

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