Stm32F407G-DISC1 problem

[electrodancer 10]

ive got the strangest thing...

i have three boards..one is a older discovery board witch is in my midibox SEQV4

the two other are new one from mouser (STM32F407G-DISC1) they are programmed with the same bootloader and latest seqv4 0.91 software.....the older works fine but the new ones do not work...

the problem is ....

when i power it from the micro usb...it does not show anything in the displays...but when i it power from the mini usb ...it does work

(the core board with the cardreader are both the same and work fine).

 

what can this be ?

[latigid on 215]

 

This should really be added to the uCapps info when TK. has a chance.