[MinnowBoard] repair minnowboard power supply

Douglas Kryder dkryder at gmail.com
Fri Mar 24 22:57:32 UTC 2017


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.krau at 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-
> bounces at lists.elinux.org] *On Behalf Of *Patrick Mulder
> *Sent:* Friday, March 24, 2017 1:04 PM
> *To:* elinux-minnowboard at 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
>
>
>
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>
>
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