Indeed. Remember the OSD3358 is a 40$ part while the whole board is 80$. It's just not a practical repair. If you were sure of the problem and swung by my lab with the replacement, I might fix it for ten bucks or free if you were fun to talk to. But as a business if you have to add in shipping and diagnostic time, it's a total loss.
That's the cost of the integrated system on a chip design of the OSD3358. Looks like a bare TPS65217C costs around 6$. That's completely fixable, as a service. If you have more time than money, you could try to somehow disable the integrated TPS65217C and provide an external 3.3V. Assuming that's the problem at all; it's more likely the load is shorted out than the supply, based on my experiences. Either way, sounds like a big job, I'd rather just buy a new one. On Sun, Aug 2, 2020, 7:55 PM evilwulfie <evilwul...@gmail.com> wrote: > these boards are throw away boards > Get a new one and dont do what you did to blow up > your blown up one > > On 8/2/2020 4:42 PM, Graham Haddock wrote: > > 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 >> >> -- > 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 beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/dfee2f1f-948b-466f-ba64-e2b7532031cfn%40googlegroups.com > <https://groups.google.com/d/msgid/beagleboard/dfee2f1f-948b-466f-ba64-e2b7532031cfn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > > -- > 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 beagleboard+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/beagleboard/6acc5e8e-e93c-79c1-a9d9-c211256cce6f%40gmail.com > <https://groups.google.com/d/msgid/beagleboard/6acc5e8e-e93c-79c1-a9d9-c211256cce6f%40gmail.com?utm_medium=email&utm_source=footer> > . > > -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAGS%2B2h-zppOryseM%3DHwB2_640OASq3cmBXsAicG7Uzwi854PVg%40mail.gmail.com.
