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.
This board was cleaned before I got to see it but it looks pretty clean. Probably a spill though. Has 1.8V on CPU. 3.4 on SMC_LID. No chime. No light flash on USB keyboard. Doesn't respond to PRAM reset. No 3.3V on PP3V3_S0SW_LCD_UF. Not sure where to look next.
Pin 3 his at 3.4V. PLT_RST_BUF_L is at 3.4V also. So, based on your last suggestion, even with no signs of life with the USB keyboard light, this has reached the SPI ROM stage? In the meantime I'll start the process of checking all of those traces and resistors.