iMac 820-4668 No Power
Only FIRST LED showing up
PP12V_G3H = 12.05V
Replaced the SMC same behavior
Power Rails as below
PP12V_G3H = 12V
PP12V_S5 = 12.05v
pp5v_s5 = 5.1v
PP3V3_S5 = 3.29V
pp5v_s4 = 5.1v
pp3v3_s4 = 3.29v
pp12v_s0 = 12.05v
PP1V2_S3 = 1.18V
pp3v3_s0 = 0v
pp5v_s0 =0v
Replaced U8400 / U8440 / U8420 Still same behavior
When trying to turn on through the PSU injecting 12V on it. It goes to 0.180a and back to 0.049 and keep stuck at it
Only FIRST LED showing up
PP12V_G3H = 12.05V
Replaced the SMC same behavior
Power Rails as below
PP12V_G3H = 12V
PP12V_S5 = 12.05v
pp5v_s5 = 5.1v
PP3V3_S5 = 3.29V
pp5v_s4 = 5.1v
pp3v3_s4 = 3.29v
pp12v_s0 = 12.05v
PP1V2_S3 = 1.18V
pp3v3_s0 = 0v
pp5v_s0 =0v
Replaced U8400 / U8440 / U8420 Still same behavior
When trying to turn on through the PSU injecting 12V on it. It goes to 0.180a and back to 0.049 and keep stuck at it