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discovery stm32f4's ld1(usb communication)not works

Question asked by ali.seyed on Jan 7, 2015
Latest reply on Jan 9, 2015 by Clive One
hi
there is a problem
when i connect my discovery board to the computer and USB port, the LD1 on board not works
and +5 volt pins on the board, have +2.67 volts
the 4 user led's have very low light ...
whats the problem?

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