Should I change my control board?

[rigidvertex]

Hello everybody,

I have a Geeetech I3 pro B that works very well for a while.

Unfortunately yesterday during the preheating of my extruder the LCD screen went out, and I lost the connection to the PC.
I checked the power supply, I have 12,37V at the input of the control board, the two LEDs to the right of the power port are lit. The fans turn correctly.

On the other hand, the LED above the USB port is off. When I connect the USB cable of the control board to my computer, the LED above the USB port of the control board blinks once and nothing else.
I tried the USB cable with an Arduino Uno board and it works fine.

Do you think there are other tests to do or I order a new GT2560 directly?

thank you in advance

[rigidvertex]

So,

I took advantage of sales to buy another control board, and it works perfectly.

For information, the old naked card does not even light up directly connected to the PC.

I think I throw the old card, unless you think we can still do something? ;)

[William]

Looks like the old control board has quality defects