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Lady's a2485 just stopped. No visible liquid damage to board 5volts 20mA not connected to battery, trackpad ppbus_aon 12.3v pp3v8_aon oscillating 2.5v to 3.4 avg 3.2v (low) I noticed U5700 has an erratic input voltage pp5v_s2_main 0.6v to 5v p5vs2tps_pwr_en 0.2v but Im going around in circles...

Macbook boots just fine with a new battery and will charge it. But when left for a day or two off charge and shutdown it flattens the battery and then won't boot. CmiZapper Battery Tool reports a drain of 90mA even when shutdown as cells drop below 3v each. This looks large to me when a...

Fans well clogged No visible evidence of liquid damage 20v 2a, battery is being charged no boot chime fans spin caps lock light toggles no internal LCD image or backlight no external video, also tried when internal LCD disconnected Tried good screen, still nothing. L8504 not blown Was able to...

Pressing power button when on charger [or on battery] would result in Apple logo for 2 seconds before shutoff. Original battery was not charging. Battery replaced, battery now charges. Given a good charge. Still only reaches Apple logo before shutoff. Corrosion on CF800, CF813 but DM voltages...

ppbus_aon 12.3v 3v8_aon 3.8v When charger connected to top USBC port [nearest screen] pp3v3_upc0_ldo [which powers the ROM] only gets 3.3 volt when pp3v3_upc1_ldo sits at 0.4v when charger connected to lower USBC port pp3v3_upc0_ldo [which powers the ROM] gets 0.4 volts pp3v3_upc1_ldo sits...

Fans 100% clogged Had very small amount of corrosion around R9581 but 2.5volts seen at all NAND. Corrosion removed and C9588, R9588, C9582, R9581. 2.5volt still there. ppbus_g3h 12.6v ppbus_hs_cpu 12.6v ppbus_hs_oth5v 12.6 ppvcc_s0_cpu 0v pp1v2_s3 0v pp3v3_g3h_rtc_x 3.3v all_sys_pwrgd 0v...

No corrosion visible. Fan full speed when in case with all peripherals attached. ppbus_aon 12v pp3v8_aon 1.8v pp3v3_aon 3.3v pp5v_aon 5v pp1v8_aon 1.8v Presuming your advise might be to do a dfu restore I checked to see if I can get it into DFO mode.... With 2 microswitches wired to board to...

Macbook dead, no visual corrosion. 20volts ppbus_g3h 13v all_sys_pwrgd 0v pp1v8_slps2r 1.8v pp3v3_s5 0.8v (25kohm to gnd) pp1v8_s5 0v (2kohm to gnd) ipd_lid_open 1.8v tried to get into dfu mode with no luck until I replaced ROM now starts up with AC2 showing RECOVERY but revive alway aborts...

I have a known good screen connected to the board. On boot I am getting such a dim display I need to view it perpendicular to the screen to see the faintest image. pp5v_s0 5v pp3v3_s0 3.3v pphv_s0sw_lcdbklt is approx 16v Current sense starts around 3v and ramps down after a few seconds but...

Ive replaced one visibly blown CD3217 and reloaded the TBT rom and have both USB C ports now achieving 20volts but thats it - still no boot. 20volts 90mA with battery disconnected. ppbus_g3h 12.3v ppvin_g3h_p5vg3s 12.3v pp3v3_g3h_rtc 3.3v pp5v_s5_ldo 0v pp5v_g3s 0v p5vg3s_en_dly 0v p5vg3s_en 0v...

I need a binary for board 820-01958 Thanks in advance

Loose screw inside case No liquid damage visible no usb activity all_sys_pwrgd. 3.3v pm_slp_s4_l 3.3v ppvrtc_g3h 3.3v pp3v3_sus 3.3v for 30 seconds until fn stops then 0v ppvcore_s0 0.8v pp1v05_s0 1.05v Thermal: CPU quick to get very hot (3seconds). PCH slow to get hot...

This iMac exhibits strange effects when transitioning from login screen to the desktop. Its a bit like a horizontal Venetian blinds being opened to view the fresh desktop. i.e. it paints the new screen in horizontal bars from the bottom up. Customer says it is also tediously slow. Is this...

Liquid damage declared but logic board is immaculate. Trackpad circuitboard badly corroded. Trackpad replaced, trackpad flex cable replaced. Some keys dont work, some keys return the wrong character. A replacement A1932 keyboard produces exact same result although an external keyboard works...

Immaculate board - no evidence of liquid damage. ppbus_g3h 13v With only screen connected, chimes, apple logo appears, then just before time-bar completes screen goes black and repeat. With only external monitor connected on usb-c same behaviour seen. Alternate SSD tried same result Ive tried...

Once booted works fine on battery including sleeping but if I shutdown and dont have charger connected it wont boot. Where should I start?

Sadly this A1398 came in came in for speakers+battery and now after the required logic board removal it doesn't boot fully. Evidence of historic liquid entry near fan but no corrosion visible after extensive search. Removed battery, IO board, keyboard, trackpad and screen, connected HDMI...

This board had corrosion on components C7101, R7101, R7132 and tracks connecting to U7100 After replacement of above and U7100 I have 0.95v on L7410/20/30 all_sys_pwrgd 3.2v pm_sysrst_l 3.3v put_rst_l 3.3v Fan spins initially then stops then spins long time. Currents remains at 0.45a with SSD...

20v 30mA on all USBC Dead machine, corrosion on C9583, C9584, both replaced but pp2v5_nand_ssd0 still 0v U9580 reflowed then lifted and refitted - no change. Board otherwise immaculate. ppbus_g3h 12.6v pp3v3_g3h 3.3v pp5v_g3h 5.1v pp1v8_slps2r 1.8v pp1v8_slp2rsw_dfr 0v pp1v8_awake 1.8v...

Board came in dead but I found corrosion over U7100s current sense components C7122, C7120 and C7125. Replaced those caps and got fanspin. Connected screen but found during boot power would shut off half way as current draw rose and would then start boot again etc. Suspected C7120 so removed...