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 nc_smc_t25_en_l and pin 154 nc_smc_xosc1 I got other smc I have ready to put there but I no sure how bad is missing those pin pad 156 and 154
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