Topping D50 DAC- Sound distortion

My Topping DAC D50 does not power on. I tried different USB charger 5V-1.0A and 2.0A.
I hear it "click" on, but indicator light (display) does not light up. Has anyone any ideas how to get it working?

5V polarity is correct. I can measure the +5V across the capacitor.

When plugged in, the whole PCB will be warm. It seems current is flowing throughout the board.

I was successful to get out sound of it however, the sound coming out is distort. Coaxial and optical both work. Display not working. I am not able to install the driver and doing a firmware update.

When I connect it to a PC via USB, it says: "USB Device Not Recognized". I believe it is a software problem. Maybe it can be fixed as long as I have access to the device via USB.

What do you think? Did anyone experience the same problem?

Thanks