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I only have 60w original charger, its a problem? SMC_ADAPTER_EN - 3.40v PM_BATLOW_L - 0v PS: with lab PSU, the green light sometimes turns on and stays on, sometimes turns on and off in a few seconds (without pattern). With original supply, rarely turns on the green light, but when it lights...

PM_DSW_PWRGD = 3.48v PCH_DSWVRMEN = 3.226v RTC_RESET_L = 3.347v PCH_SRTCRST_L = 3.347v PCH_INTRUDER_L = 3.062v PCH_INTVRMEN_L = 3.256v PP5V_S5 = 5v SMC_PM_G2_EN = 3.482v apparently everything is ok, what else can I check? Thanks

Edited: 820-2915-A (Sorry..) Rewrited original bios What can i check now?

Hello! I have this mac that does not turn on, does not turn on any led on the magsafe and no fan. (I already rewrite bios) No corrosion/liquid damage measurements: PPBUS_G3H = 12.59v PP3V42_G3H = 3.485v PP5V_S0 = 0.013v PP3V3_S5 = 3.355v PP3V3_SUS = 0v PP1V05_SUS = 0v PP3V3_S0 = 0v...

It was really the defective Q7950, it was not shorted but at the output (12V_S0_FET) there was only 2v. Replaced and start normally :) Thanks! SOLVED

Hi! I'm new here :) Then: iMac 21.5' A1418 (2012) - 820-3302 board No power, no liquid, no corrosion 1 Led is on (S5 ok i belive) I press the power button (also trigger SMC_ONOFF_L in J5020 pads) and nothing happens. I don't have much experience with iMacs, but following the datasheet, I...