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Got an iMAC where the first LED Blinks on button press but not turning on.
Its not Q8450 and i have steady 12V
I'm not getting pm_slp_s4_l and not pulsing either.
is the criteria for s4 en same as macbook?
If S5 LED blinks when you press power button, means that 3V3_S5 is not steady.
So, do you have at least 12V_S5 steady all the time?
If not, check around Q/U6970.
Be sure 12V_G3H is stable.
i meant that i have 3.3V for 3v3_s5 and 12v for 12v_s5 up till when i click the the power button and it blinks.
means voltage drops to 0 for both lines and go back to 3.3v and 12v shortly after
"6. SYSCLK_CLK32K_RTCX1 (RTCX1)"
I suppose you've meant PCH_CLK32K_RTCX1.
3V there for sure?
In such case, other reason for bad PCH.
Should have 32KHz sine wave there.