A friend gave me a Macbook Pro A2338 for free that will not boot. So far far tried reseting the SMC controller, DFU mode and unplugging the battery. So far the easy fixes have not worked. From what I understand he used a 3rd party dock and apparently that is what he thinks killed it. I have done some basic repairs and soldering but on through hole components. Would like to narrow down what is causing ti to to boot so I can decide if it is something I can reapir or I can send it off for repair.