When i removed D81 power was present on VDD_5V but only at about 4.5V which is I guess the voltage drop across D82.
there was no voltage on VDD_3V3 and the device would not startup - even after pressing the power on button. Has anyone solved this? On Wednesday, 1 July 2020 21:58:00 UTC+1, Adrian Hatton wrote: > > I have found D81 from the silk screen data. Will be removing and trying as > a next step. > > [image: ASSET_BOT.PNG] > > > On Wednesday, 1 July 2020 21:42:12 UTC+1, Adrian Hatton wrote: >> >> Hi Geza, >> >> I was wondering if you made any progress here? >> >> I took a look at the schematics myself and I agree that by removing D81 >> you essentially disconnect VDD_TYPE C from VDD_5V. >> >> If you then apply 5v power to VDD_CAPE_5V it connects to VDD_5V through >> D82 and should power the device. >> >> I assume you would then boot the device by connecting PWR_BUT or P9.9 to >> GND. >> >> Have you tried this? Have you been able to locate D81 on the board? I >> have downloaded the board.pdf but it is extremely difficult to find >> specific components. >> >> Many thanks. >> >> >> On Saturday, 6 June 2020 09:41:45 UTC+1, Geza Kuhmann wrote: >>> >>> Hi All, >>> >>> I'd like to make my BBAI so it could only be powered from the J9.5/6 >>> pins, but *not* from the USB-C connector. >>> On the other hand, the USB-C connector should stay functional as pure >>> USB connection (using the BBAI as a USB gadget). >>> >>> Reading the schematic it seems to me that removing diode D81 would >>> exactly do this, but not being a hardware expert, I would be glad if >>> somebody could confirm this. >>> >>> Thanks, >>> >>> Geza >>> >> -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/07429b3e-7437-45dc-aa19-8a527cdc82eco%40googlegroups.com.
