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New dna250 build only working while pluged into USB


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So I just finished my new DNA250 box, and it worked great.  For about 5 mins.  Now it will only work while plugged into a USB cord.  Battery is not working at all.  I have tried different batteries such as my MaxAmps that is in my currently running mod and those dont work either so I know its not the battery.  Not sure what I should check.  Just got the board today in the mail, and now its not working.  I confirmed that the Battery wasnt hooked up reversed.  I just am not sure what else I should check.

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got a blown power ctrl ic? that tiny black square with 4pins on each side. i once had this symtom and fixed it with a same ic. the reason y i know where the problem is was because i was testing it without casing at the very moment so that ic just failed with a terrible red flame flash. it was just literally burnt

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