For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
I have another 820-2850 motherboard - image was coming but there was squareness , i removed the video card, this motherboard does the same thing the fan spins and stops.
I really don't understand why do you insist to post Q7030 all pins voltage.
I asked about ONE voltage point (F7040).
If you like to waste time, is your choice.
So you get incorrect PPBUS_G3H voltage, 12.13V; no matters battery is connected, or not.
That means bad communication between SMC and U7000.
Did you disconnect BIL?
Post voltage and diode mode to ground at SCL/SDA lines of battery bus.
i tried SMC bypass but the fan is not spinning and not power on, when i leave bypass , the fan keeps turning and stopping , it keeps doing the same thing it turns and stops