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.
You have to google for the ASD, it's pretty hard to get it now, but it's possible. Anyway ASD won't solve your problem. I would suggest you to start from hardware inspection. Maybe there is corossion somewhere on motherboard. High fan spin is moslty caused by damaged/corroded/unplugged trackpad flex cable, take a look there.