MACBOOK A1534 no pwer

[nassih]

hi everybody
i have in my shop a macbook a1534 2016 with symptom not charging no power
after open it i have found a liquid around U7100 but no short
i have measured and check different blocks no issue.
some voltages:
CHGR_phase2=8.9v
P2V7 nand_R= 2.7v
PPVCCIO_S0= 0.85v
P1V2V_S3= 1.2v
PPVCORE_SUS_PCH= 1v
PP1V_SUS= 1v
pp3v3_S5 = 3.3v
PP5v_S4 =5v
tanks!

[piernov]

Re: MACBOOK A1534 no pwer

With these measurements the machine is turning on, so not sure what you mean by "no power". Could be the usual dead CPU.


Edit: my bad, missed the year, it's an 820-00244 board.

[nassih]

Re: MACBOOK A1534 no pwer

tanks bro
yes its power on but no chime no display and no backlight.
the cpu is a bit cold,i think other voltage is missing.
ppvcore_so_cpu_ph1 =0v
ppvcore_so_cpu_ph2=0v
ppvccgt_so_cpu_ph1=0v
ppvccgt_so_cpu_ph2=0v

[nassih]

Re: MACBOOK A1534 no pwer

problem resolved after cheeking water damage parts around U7100 i have found a missing line ppbus_s5_hs_computing_isns the Resistance R7101 have no contact due a water damage.
now i have other problem the machine not sleeping when closing lid pleas bro where Lid Sensor is located.