[MinnowBoard] repair minnowboard power supply

Patrick Mulder mulder.patrick at gmail.com
Tue Mar 28 05:47:15 UTC 2017


Thanks you all for your feedback!

My plan is to repair the board with replacing the NTC3012

Regarding parts supply I got some additional info which might be
interesting for others in the same situation: After contacting Nuvoton and
asking for small quantity supplier that ships to EU, they pointed me to:

http://c.b1wt.com/h.VV294X?cv=wYJ0nyHKPN&sm=fa5b17

as my chinese is not so good, you can directly contact them via skype as
well ( annie198908201 ). Another supplier with MOQ < 10 should be available
via 2217571195 at qq.com.

Next step is soldering repair then with hot air. Let's see how it goes.

Have a nice day,

Patrick




On Sun, Mar 26, 2017 at 10:27 AM, zahra rahimkhani <
zrahimkhani2014 at gmail.com> wrote:

> Hello
> you should  change NCT3012S-X . If it do not work correctly , you should
> check Sdram voltages ,if it id not correct you should change NB675-X . i do
> this stage and it work correctlly now .
> Good luck
>
> On Sat, Mar 25, 2017 at 12:33 AM, Patrick Mulder <mulder.patrick at gmail.com
> > wrote:
>
>> 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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