SK-TDA4VM: The development board cannot be used. Restarting cannot solve the problem

Hello,

The SD card in other 3 boards is ok；

Hello, 

Are you saying the same SD card can boot up fine on other 3 boards..  Can you confirm?

Thanks.

Yes，confirm.

We conducted cross validation.

OK, thanks for confirming.

We suspect board issue. Can you provide more details on this board that has issue? What is the board revision and a Photo/Picture of this board?

Also, please let us know board revision of other working board you have.

Thanks.

 We haven't touched the board before，You can see the traces of secondary welding.

Hi,

I see this board is PROC112B. Do your working boards have the same label?

Thank you,

Fabiana

other  3 boards are 1 PROC112B，2 PROC112A;

The fault board can see the traces of secondary welding，the resistances near The SD card slot. We haven't touched the board before