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Nice one Mr.Vali!!! Thank you for your patience and insistence. Without your help I would not be able to repair this mac. you are a legend! in addition to being repaired I learned from you .. thanks one more time

I do not know how to tell you this but while I was doing the measurements on Q7820 / 22, the comes to life without replace any component!!! i use a power supply to test boards, and when i see the current up to 900mA i'm WOW!!! This board repaired itself. in this type of situations what do you do...

No i have PM_SLP_SUS_L = 3.3V stable! i noticed PP5V_S3 in diode mode i have 424v compare a working board i have 0.138v ... the problem can be here..already replace again this 2 components q7261 and q7260. i already check the rails and no one missing! can e a component fault?? thank you

U7939 pin1- PM_RSMRST_L = 0V pin 2 - GND pin3 - N.C - 3.3V pin4 - S4_PGOOD_CT = 1.4V pin5 - PP3V3_SUS_PWRCTL - 0.04V pin6 - PP3V3_S5_PWRCTL - 3.3V Don't star via SMC bypass mode!

PM_PWRBTN_L the only reaction i see it's the signal goes to 0v when i put SMC_ONOFF_L to ground for an instance. PM_RSMRST_L = 0V PPBUS_G3H and 3V42 are stable's! And in diode mode compare with a working board and shows same values! i still haven't green light with original charge only with...

I don't see any reaction! =( i test with power supply and when i press the power button only consume 0.018A to 0.020A. already replace SMC for one i know it's working!! and same history,, could be PCH? I really needed this board repaired. so I because insist a little more .. thank you

SMC_ONOFF_L When i short the pads 3.42V gos to 0V! i check PM_SLP_S4_L and PM_SLP_S3_L with oscilloscope and i don't have any pulse when i short the pads (R5015/16). SMC_BC_ACOK measuring with oscilloscope and ORIGINAL CHARGER...

whiling plug and unplug the mega safe, On PM_SLP_S4_L and PM_SLP_S3_L i have this ! https://drive.google.com/file/d/1kq_y91of8WX3ZjJKAe0OhZsKcTkvGmxv/view?usp=sharing Can i consider a pulse?? I already check this board with scoop 10 times looking components knockouts ... and Board have good...

U7941 1 - pp3v42_g3h_pwrctl - 3.42v 2 - smc_pm_g2_en - 3.4v 3 -p5v3v3_reg_en - 3.2v 4 - p3v3s5_en_l - 0v 5 - gnd 6 - pp3v3_s5_pwrctl - 3.3v 7 - s5pgood_dly - 0v 8 - s5_pwrgd - 3.4v

All rails checked and not found any short's! As I was analyzing it was comparing with a working board and the values are similar (Diode mode)! Already replace U7000, by discharge same result's! With fake charge i have green light 1-2 sec goes orange and then goes green but don't turn on...

Already replaced magasafe for a new on.. Replace q7260 and q7261 and PP5v_S3 now i have 439v on diode mode! Compare with a working board it's same value! but the board not turnin on and no green light!! i will check all trails for shorts!! =(

U6900 1- SMC_BC_ACOK_VCC = 3.340V - 3.484 Floating https://drive.google.com/file/d/1ynHbGna1dnDmAm6pmcYCerOcK7DsGr9Z/view?usp=sharing 4 - SYS_ONEWIRE - 2.800V - 2.980V - Floating 5 - ADAPTER_SENSE - 2.800V - 2.980V - Floating u6901 1- SMC_BC_ACOK_VCC = 3.340V - 3.484 Floating 2-1-...

ya, i don't have green light yet... when i plug the charger i have a green light for 1 sec and then goes off!! already replace again u7200!! and noo changes!!

JohnB8812 touch on the spot!! i have a partial short on PP5v_S3!! Diode mode i have 139v ... i have one working board and i have 439v on the line! i put 3v on this line and u7200 start to heat a little but i don't have others components heating!! i take off u7200 put the 3v and DC power don't...

Hey working IMAC 27 mid 2010 with backlight issue!! After 1 min goes off! I have another one in my store and i am sure the problem is on V267-601HF not on LCD!! I preferred it to bebut prolem is on V267-601HF! The imac with other backlight "V267-601HF" working fine because i'm listening music...

ok, while checking the basic signals first point i was checked BANG !! L4901 was moved!! heheh https://drive.google.com/file/d/15VXX9gZCkA0bvnWEhiTwMkGRXQpgGyTl/view?usp=sharing Now i have PPBUS Stable!! Missing green light!! PPBUS = 12.63V PP3V42_G3H = 3.42V PPVRTC_G3H = 3.1V PP5V_S5 = 5V...

Already reballing SMC and replaced for a donor board!! Same history.. PPBus still 12.32V! Probably this SMC it's Bad!! there's something else I can do before I replace to another one?? thanks

SMC_RESET_L = 3.449V SMC_BC_acok = 3.4V sys_onwire = 3.4V adapter_sense = 3.4V SMC_PM_G2_EN = 0.133V SMC_ADAPTER_EN = 0V

Hey, working on 3115 board with no green light. No signals Liquid damage, board very clean! PPBUS = 12.30V PP3V42_G3H = 3.42V PPVRTC_G3H = 3.4V PP5V_S5 = 0.42V - No short 430v - Diode_mod PP5V_SUS = 0V already reflow SMC - no changes already test with power supply on this board and...

Hey , Working on 2936 b motherboard with liquid damage near SMC, U7000 and some asshole touch on Q9425 + Q3880!! u initial the board don't turn on because PPBUS = 12.3V .. i replace U7000 + SMC and board was working well until i plug the battery. After that the board don't turn on and i noticed...