Patrick, That certainly is good news. Thanks for the info. Yes, there is firmware that supplies a BIOS of sorts. It is user flashable. I think .094 is the latest. That boots and then loads what you tell it to. I guess that is a holdover from Microsoft days, being an Intel product. I have a SATA drive that has Linux mint which is what I run.
On May 3, 2017 12:10 AM, "Patrick Mulder" <mulder.patr...@gmail.com> wrote: > good news, the repair worked, and the minnowboard is running again. > > I was wondering how the board boots actually from the SD card now. Does it > have flash memory for the first level boot, e.g. where a bootloader looks > for the sd card? > > On Fri, Mar 24, 2017 at 11:57 PM, Douglas Kryder <dkry...@gmail.com> > wrote: > >> yes, it is U35 which goes bad. it takes some soldering skills to replace >> it. >> >> On Fri, Mar 24, 2017 at 1:54 PM, Krau, Michael P < >> michael.p.k...@intel.com> wrote: >> >>> If I remember correctly, (from back in the early days, when this was a >>> more common event): >>> >>> >>> >>> The schematic page 22 is of more value. I believe when 12vts is >>> applied, the chip U35 was the first (and usually only) part to go south. >>> >>> >>> >>> Though there should be some discussion of this in earlier threads (about >>> 2 + years ago). >>> >>> >>> >>> Sincerely, >>> >>> >>> >>> Michael Krau >>> >>> >>> >>> *From:* elinux-MinnowBoard [mailto:elinux-minnowboard-bou >>> n...@lists.elinux.org] *On Behalf Of *Patrick Mulder >>> *Sent:* Friday, March 24, 2017 1:04 PM >>> *To:* elinux-minnowboard@lists.elinux.org >>> *Subject:* [MinnowBoard] repair minnowboard power supply >>> >>> >>> >>> Hello, >>> >>> >>> >>> unfortunately, I applied 12V instead of 5V on the DC jack. >>> >>> >>> >>> Now, only 1 of 2 diodes is lightning up. >>> >>> >>> >>> I am looking at: >>> >>> >>> >>> http://wiki.minnowboard.org/images/b/bd/Minnowboard_Turbot_X205_Sch.pdf >>> >>> >>> >>> p. 29: >>> >>> >>> >>> 5 V DC --> NMOS and Switching supply . Not sure where to look for the >>> broken IC from this. What could I do to repair the board? >>> >>> >>> >>> Thanks a lot! >>> >>> >>> >>> Patrick >>> >>> >>> >>> _______________________________________________ >>> elinux-MinnowBoard mailing list >>> elinux-MinnowBoard@lists.elinux.org >>> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard >>> >>> >> >> _______________________________________________ >> elinux-MinnowBoard mailing list >> elinux-MinnowBoard@lists.elinux.org >> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard >> >> > > _______________________________________________ > elinux-MinnowBoard mailing list > elinux-MinnowBoard@lists.elinux.org > http://lists.elinux.org/mailman/listinfo/elinux-minnowboard > >
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