2009 imac 27" power on/off switch intermittent

protocold

Member
Is that the switch itself that may have contact problem? I felt like the "click" is fine. Or is this the power supply issue? Logic board (820-2507-A)?
 
Last edited:

2informaticos

Administrator
Staff member
Disconnect power button and use S5010 pads to simulate.
Check if SMC_ONOFF_L correctly toggles 3V/0V.
Remove C5010 if you don't get 3V there.
 
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