Sandisk SSD logic board repair

Hello everyone,

I have defective Sandisk Extreme 240GB SSD and I'm traying to repair it. SSD is not being detected by computer at all.

I figured out these things:

• TPS62400 dual voltage regulator looks okay.
• 2x TPS54418 voltage regulators looks okay.
• Central MCU's Oscillator output pin looks working.
• I've soldered a resistor and LED to D1 and R1, LED lights up after connect SSD to computer.

I didn't identify some components. I'm suspecting that the controller SandForce SF-2281VB1-SDC.

What do you suggest?

Thank you!