Could you help or advise me something to figure out what's wrong with this motherboard?
There is a shortcut somewhere. On the first picture the, I marked a resistor, a few condensators all over these and all next to of the NANDs are shorted and shows ~ 4-5 Ohms of resistance. The second picture shows exact voltages from a good ssd. (measured with a Chinese multimeter
The voltage regulator is a http://www.ti.com/lit/ds/symlink/tps652510.pdf
The 1,0x Volts are needed for the contoller and the 3,0x for the NANDs.
In the defective SSD these values about 0,3 and 0,5 Volts, the device itself consumes about 3 Watts and the contoller becames really hot within a few seconds.
Thanks in advance