Re: A1278 (820-2936-A) green light no power



Hi DellXPS15,

i have mbp a1278 (820-2936B), my mbp is missing p5vs3_vo1 on pin 24 (u7200/tps51125)...but p3v3s5_vo2 on pin 7 is present, 5v3v3v_reg_en present on pin 13, pp5v_s5 is also presnt on pin 17.... could it be becaus e bad chip tps51125 for some reason cannot generate p5vs3.. (there are not shot to ground)

Please help me, green light is present, when attach battery change into orange...but no fan spinning ( because missing p5vs3 and pp5vs0)...

Re: Macbook Pro 13" A1278 (Mid 2012) no signs of life

i have mbp a1278 core i7 (820-2936-B) ...mine is missing PP5VS3_Vo1...on pin 24 U7200 (TPS51125)...could it be because bad chip or something else?....because on pin 7 P3V3S5_VO2 is present...