<div dir="ltr">i have 4 left and would like to keep 2 so i can send you 2 if that would help you. just email me a shipping address and i will put them in the mail tomorrow. <a href="mailto:dkryder@gmail.com">dkryder@gmail.com</a></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Mar 24, 2017 at 5:15 PM, W Paul Mills <span dir="ltr"><<a href="mailto:W.P.Mills@wpmills.com" target="_blank">W.P.Mills@wpmills.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><<a href="https://www.arrow.com/en/products/nct3012str/nuvoton-technology" rel="noreferrer" target="_blank">https://www.arrow.com/en/<wbr>products/nct3012str/nuvoton-<wbr>technology</a>><br>
<span class=""><br>
On 03/24/2017 07:05 PM, Douglas Kryder wrote:<br>
> i do have some spare NCT3012S which came from digikey when i had the<br>
> same problem.<br>
><br>
> On Fri, Mar 24, 2017 at 4:30 PM, Patrick Mulder<br>
</span><span class="">> <<a href="mailto:mulder.patrick@gmail.com">mulder.patrick@gmail.com</a> <mailto:<a href="mailto:mulder.patrick@gmail.com">mulder.patrick@gmail.<wbr>com</a>>> wrote:<br>
><br>
> Thanks! Yes, i could measure the voltage out of U35 is 0V with input<br>
> 5V, so, indeed it's the problem.<br>
><br>
> One sub problem is actually sourcing the Nuvoton part:<br>
><br>
> <a href="http://media.digikey.com/pdf/Data%20Sheets/Nuvoton%20PDFs/NCT3012S_RevA0.pdf" rel="noreferrer" target="_blank">http://media.digikey.com/pdf/<wbr>Data%20Sheets/Nuvoton%20PDFs/<wbr>NCT3012S_RevA0.pdf</a><br>
> <<a href="http://media.digikey.com/pdf/Data%20Sheets/Nuvoton%20PDFs/NCT3012S_RevA0.pdf" rel="noreferrer" target="_blank">http://media.digikey.com/pdf/<wbr>Data%20Sheets/Nuvoton%20PDFs/<wbr>NCT3012S_RevA0.pdf</a>><br>
><br>
> I see Nuvoton is a Taiwanese company; trying to get in touch with a<br>
> local supplier.<br>
><br>
><br>
> On Fri, Mar 24, 2017 at 11:57 PM, Douglas Kryder <<a href="mailto:dkryder@gmail.com">dkryder@gmail.com</a><br>
</span><span class="">> <mailto:<a href="mailto:dkryder@gmail.com">dkryder@gmail.com</a>>> wrote:<br>
><br>
> yes, it is U35 which goes bad. it takes some soldering skills to<br>
> replace it.<br>
><br>
> On Fri, Mar 24, 2017 at 1:54 PM, Krau, Michael P<br>
</span><span class="">> <<a href="mailto:michael.p.krau@intel.com">michael.p.krau@intel.com</a> <mailto:<a href="mailto:michael.p.krau@intel.com">michael.p.krau@intel.<wbr>com</a>>> wrote:<br>
><br>
> If I remember correctly, (from back in the early days, when<br>
</span>> this was a more common event):____<br>
><br>
> __ __<br>
<span class="">><br>
> The schematic page 22 is of more value. I believe when<br>
> 12vts is applied, the chip U35 was the first (and usually<br>
</span>> only) part to go south. ____<br>
><br>
> __ __<br>
<span class="">><br>
> Though there should be some discussion of this in earlier<br>
</span>> threads (about 2 + years ago). ____<br>
><br>
> __ __<br>
><br>
> Sincerely,____<br>
><br>
> __ __<br>
><br>
> Michael Krau____<br>
><br>
> ____<br>
><br>
> *From:*elinux-MinnowBoard<br>
> [mailto:<a href="mailto:elinux-minnowboard-bounces@lists.elinux.org">elinux-minnowboard-<wbr>bounces@lists.elinux.org</a><br>
> <mailto:<a href="mailto:elinux-minnowboard-bounces@lists.elinux.org">elinux-minnowboard-<wbr>bounces@lists.elinux.org</a>>] *On<br>
> Behalf Of *Patrick Mulder<br>
> *Sent:* Friday, March 24, 2017 1:04 PM<br>
> *To:* <a href="mailto:elinux-minnowboard@lists.elinux.org">elinux-minnowboard@lists.<wbr>elinux.org</a><br>
> <mailto:<a href="mailto:elinux-minnowboard@lists.elinux.org">elinux-minnowboard@<wbr>lists.elinux.org</a>><br>
> *Subject:* [MinnowBoard] repair minnowboard power supply____<br>
><br>
> __ __<br>
><br>
> Hello,____<br>
><br>
> __ __<br>
><br>
> unfortunately, I applied 12V instead of 5V on the DC jack.____<br>
><br>
> __ __<br>
><br>
> Now, only 1 of 2 diodes is lightning up.____<br>
><br>
> __ __<br>
><br>
> I am looking at:____<br>
><br>
> __ __<br>
><br>
> <a href="http://wiki.minnowboard.org/images/b/bd/Minnowboard_Turbot_X205_Sch.pdf" rel="noreferrer" target="_blank">http://wiki.minnowboard.org/<wbr>images/b/bd/Minnowboard_<wbr>Turbot_X205_Sch.pdf</a><br>
> <<a href="http://wiki.minnowboard.org/images/b/bd/Minnowboard_Turbot_X205_Sch.pdf" rel="noreferrer" target="_blank">http://wiki.minnowboard.org/<wbr>images/b/bd/Minnowboard_<wbr>Turbot_X205_Sch.pdf</a>>____<br>
><br>
> __ __<br>
><br>
> p. 29:____<br>
><br>
> __ __<br>
<span class="">><br>
> 5 V DC --> NMOS and Switching supply . Not sure where to<br>
> look for the broken IC from this. What could I do to repair<br>
</span>> the board?____<br>
><br>
> __ __<br>
><br>
> Thanks a lot!____<br>
><br>
> __ __<br>
><br>
> Patrick____<br>
><br>
> __ __<br>
<span class="">><br>
><br>
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<br>
</span><span class="HOEnZb"><font color="#888888">--<br>
/*****************************<wbr>*****<br>
* W. Paul Mills - Topeka, KS, USA *<br>
******************************<wbr>****/<br>
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</div></div></blockquote></div><br></div>