MKS_SGEN_L_V2 LCD problem?? (1 reply)

Marlin 2.0.7.2 (f74015b 22 days ago)

I cannot use the SD card attached to the LCD with MKS_SGEN_L_V2
There is no beep.
LCD display normal
Rotary encoder normal
STOP switch normal
The MAINBOARD SD card is not recognized as a windows drive.

Is this the correct behavior?
Is there a mistake in the config?
or mainboard broken?

hardware check
It works fine when I connect the LCD to another mainboard.
test SKR1.4
SD,LCD,encoder,beep,stop swich,WindowsDRIVE ALL OK

TEST LCD (Of course, they are config one by one)
// [reprap.org]
//
#define MKS_MINI_12864

// [reprap.org]
//
#define REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER