STM32H745I-DISCO integrated st-linkv3 not working

[RafaelS]

Hello,

I am working in STM32H745I-DISCO since January. Yesterday I have disconected the USB of CN14 connector ( I used it for programming/debuging and powering). This morning I have connected de USB but the board doesn´t work. After test de voltages I have realised that the st-linkc3 does not pull up the pin T_PWR_EN of component U24.

I have tried to connect through stm32cubeprogramer but Error: no debug probe detected appears.

There are any way to recover this?

Thank you in advance.

[mƎALLEm]

Hello,

What do you mean by:

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@RafaelS wrote:

I have disconected the USB of CN14 connector 

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You've unsoldered the USB connector?

[Andrew Neil]

Sounds like the connector's broken?

Have you tried powering the board through any of the other options?

https://www.st.com/resource/en/user_manual/um2488-discovery-kits-with-stm32h745xi-and-stm32h750xb-mcus-stmicroelectronics.pdf#page=11

[RafaelS · Accepted solution]

Thanks for the quick response. And sorry for my English.

I meant that I disconnected the USB cable from the CN14 connector.

It finally seemed to be a problem with the computer. When I checked in Device Manager to see if the connection with the ST-Link was present, I realized that Device Manager was not responding, and I couldn't close it. I restarted the computer, and now I was able to connect to the board and program it.

Best regards!