So i'm pretty sure my USB shorted my Main board the other day and burned a resistor out on my Cetus. Wifi doesn't work anymore not sure why and i have no way to connect my printer to my PC anymore without the USB. So I'm pretty sure I'm F'ed in the A without a new control board I have a new CPU and my old CPU but i'm fairly certian I'm F'ed.
Have you got a mutimeter? Is so, measure the resistors and see if they are open circuit.The jpegs you posted also show semiconductors, wonder if you have done any voltage measurements around these devices?
Please contact email@example.com for mainboard replacement.