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 got this used water damage look like someone was work on before, but problem was turn on and off after 1 seg, green light , I check it i found short at probe: 1315 pp3v3_s5avref_smc and 1316 gnd_smc_avss those go to smc, so I take out smc to see and I found no pad in u4900 pin 156...