Hi Gerard , I finally tried that recently and my Minnow Max boards work again after replacing U35 chip . Great ! . Thanks again.
Thanks, Dawei From: Wu, DaweiX Sent: Monday, June 29, 2015 9:48 AM To: MinnowBoard Development and Community Discussion Subject: RE: [MinnowBoard] Minnowboard doens't work after connecting 12V power Thanks Gerard, I didn’t see smoke and no ‘pop’ heard when I connecting 12V power , and the U35 seems look good . Anyway, I will try your way to fix it . Thanks, Dawei From: elinux-MinnowBoard [mailto:[email protected]] On Behalf Of Gerard Bucas Sent: Saturday, June 27, 2015 7:37 AM To: MinnowBoard Development and Community Discussion Subject: Re: [MinnowBoard] Minnowboard doens't work after connecting 12V power 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]<mailto:[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]<mailto:[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]<mailto:[email protected]> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard _______________________________________________ elinux-MinnowBoard mailing list [email protected]<mailto:[email protected]> http://lists.elinux.org/mailman/listinfo/elinux-minnowboard
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