Hi Dawei I personally 'blew up' 3 MinnowMax boards by accidently inserting a 12V power supply! In all three cases, there was smoke (and a 'pop') and after that only one LED.
In my case I discovered that all three boards could easily be fixed by replacing U35. After we replaced U35 with a new part, all three boards seem to work 100% again. Of course I am not sure what happened to your board and why it stopped working. I suggest you look at U35 under a magnifying glass and if you see a small spot/damage on it, you will probably have the same problem I had - so worth a try to replace U35 (very cheap part, widely available: NUVOTON, part# NCT3012S TR). Good luck!! Regards Gerard > On Jun 26, 2015, at 5:53 AM, Wu, DaweiX <[email protected]> wrote: > > Thanks for your quick reply . Can I fix it by replacing some power chip ? > > From: elinux-MinnowBoard [mailto:[email protected]] > On Behalf Of Grigory V. Korotov > Sent: Friday, June 26, 2015 17:47 PM > To: MinnowBoard Development and Community Discussion > Subject: Re: [MinnowBoard] Minnowboard doens't work after connecting 12V power > > > Hi. > Probably you need new board. Max dont have any overvoltage protection. > > > 26 июня 2015 г., в 11:15, Wu, DaweiX <[email protected]> написал(а): > > Hi, there is only one LED(d1) on, anyone can help to on this ? > > > Thanks, > Dawei > _______________________________________________ > elinux-MinnowBoard mailing list > [email protected] > http://lists.elinux.org/mailman/listinfo/elinux-minnowboard > _______________________________________________ > elinux-MinnowBoard mailing list > [email protected] > http://lists.elinux.org/mailman/listinfo/elinux-minnowboard
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