discovery board power on issue

[javardng]

when power is supplied, the discovery board's LD2 is powered on but the main COM isn't powered on, what is the problem?

 

[Issamos]

Hello @javardng 

wish Discovery board are you using?

Best regards.

II

[javardng]

stm32f407g,only ld2 is on when powered

 

[Issamos]

The CN3 jumper is on or off? Can you add more details about your issue. Is the board detected by the PC? What is the Connector  you are using? If you can provide a clear picture to your configurations?

Best regards.

II

[Tesla DeLorean]

Sorry, you're not explaining your situation very well.

What does "main COM" refer too?

The STM32F407G-DISC boards don't provide for a VCP/CDC type COM port

Which USB connector are you using the TOP/NORTH end one?

What type of cable? Charging cables won't bring up devices on a Windows machine.

[Issamos]

Hello again @javardng 

I think you may find a solution to your issue in this link.

Best regards.

II