4 replies to this topic

[ea1ii]

My Netduino plus 2 worked fine till yesterday, then a blue screen (Win 7 )

 

Now, when pluging USB Power and Onboard LEDs ligth for a second and quickly dim to off .

 

The PC seems to see the device for while but...

 

 

What do ya thing about this, guys?

 

[Chris Walker]

Hi ea1ii, That doesn't sound too good Can you try booting the board in bootloader mode (holding the pushbutton while powering it up via USB) and see if the same thing happens? Also, just to confirm: you don't have anything plugged into the board correct? Chris

[ea1ii]

I'm afraid I've already tried the bootloader mode and that made no difference.

 

About the connections, I only used the common GND to multiplexing board and a few outputs, to a TTL register externally powered. But the problema persist with "my board" unplugged.

[NooM]

i dont think an usb crash can affect the netduino in any case.

 

on the other side, something connected wrong with your externally powered thing can crash your usb.

 

my guess is: youve burned the netduino connected to the externally powered multiplexing thing, than it somehow shortened the

usb power and/or the usb data pins, wich than gave you your nice bluescreen.

[ea1ii]

I think your guess maybe right, NooM. On monday I'll test on another PC. Anyway, for the second just after powering up, the PC seems to detect the thing. I'll also try to power from a external supply. Maybe the break is in the power supply circuit and could be repaired (hope is the last thing to lost).