2025-11-18 6:32 AM
Hello everyone i had today while working with the NUCLEO H753ZI board and when i try to upload the code i had faced this error message when i try to connect with the cube programmer i faced this error and my LD6 pin is glowing with low intensity can you please tell me why i facing this issue whethere this could be any short problem or anything else
2025-11-18 6:43 AM
Probably you ran into this:
How to unbrick an STM32H7 after setting the wrong ... - STMicroelectronics Community
2025-11-18 6:55 AM
Or:
UM2407 says LD6 glows lit when an overcurrent happens (7.4.1 Power supply from ST-Link-V3E USB connector).
Do you consume too much power somewhere?
It is hard to tell from the 2nd pic. Is JP2 1-2 (STLINK) closed?
2025-11-18 8:36 PM
@mfgkw Yes it is closed sir. I haven't connected the any external device which condumes more power i have been checking the interupt pins with the weigamd readers.
2025-11-18 9:33 PM
I had checked the 5 V pin of the of these connector
PWR LD5: The green LED (LD5) indicates that the STM32H7 part is powered. The +5 V
power is available on CN8 pin 9 and CN11 pin 18.
And got about only 1 V but hadn't connected any device to my board
2025-11-18 10:23 PM - edited 2025-11-18 11:22 PM
> And got about only 1 V but hadn't connected any device to my board
You measure only 1V on the +5V pin? This smells like a short circuit somewhere.
Is the board unmodified (compared to default settings from UM2408)? All jumpers in default setting? Solder bridges untouched (see TDK's hint)? Some pins connected by accident? Only connection is the USB from PC?
When this is checked you can open JP4 (IDD measurement) and connect an amp meter. This gives you the power consumption. I guess it is too high actually...
I have no NUCLEO H753ZI available to compare, but another NUCLEO 144 with M7 - a NUCLEO-H7S3L8.
As delivered with no modifications I measure less than 67 mA.