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 see big differences for some readings.
You can accept 484 instead of 445 (484/445), 272/243, even 392/336.
However, 588/480, 599/493, 518/435, or 374/157 don't look good at all.
Higher values than normal should be caused by bad solders, broken/corroded traces.
I was not able to access DFU mode. Anyway JT400 (trackpad connector) it's water damaged. When the flex cable is connected i got short to ground on PPBUS_AON.
I don't have another board for comparison.
If nothing strange there, connect trackpad.
Find convenient test points and check again, just in case trackpad board/flex may have corrosion.
If all good, apply power...
Yes, this is M2 but the process is the same for M1 MacBook Pro 13". Anyway no luck on getting DFU whit keyboard thing. Maybe I need to try DFU force using jumper? Wich pads I have to bridge with SOC_FORCE_DFU ? thank you.