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No Backlight but has video ppvout_so_lcdbklt_f is 39.5 Oms is this a short

fixed it was a bad trace on SMC_LID_LEFT

ANYTHING i can do to check for

HI

when i HAD 19.5V 0A i had a short on PPBUS_G3H BUT GOT 12.2V NOW I HAVE THE 19.5V AND 0.54A

WHEN i plug in the charger the only thing that gets hot on the thermal camera is U3900

19.6V 0A

I DID IT FINISHED NOW I DON'T HAVE THE VOLTAGES WITHOUT BATTERY

i found a little corrosion around u5850 i cleaned it up and now i get NOW I GET POWER WITH OUT BATTERY 19.5v and 0.71A with fan spin cpu not getting hot L8102 =1.02V L7701 1.2V L7700 LA300 = 1.350V LA350 =0.921V LA650 = 0.903V LA640 = 0.909V LA340 = 0.910V L7231 = 0V L7330 = 1.22V L7221 =...

the customer said it just got hot and shut off

I have an A1990 820-01814-01 with no boot. It powers on, I have 19.5V on ampmeter, and it goes to 2.88A with battery, and with out i get 19.6v and it goes to 0.30A then down to 0.A Already tried revive and restore DFU with no error but no sucess. It has fan spin, i get 5v from USB...

820-01041 backlight problem when i look at board i see water damage around j4800 and cb211 cc773 cc772 i change them from other board the board boot up everything works but when i close lid and open the backlight does not come on i see image key board lights up but not touch bar and screen

i tryed with key board nothing when i get 19.5V with 0A nothing coming out of usb no 5V when i hold down power button the 19.5V does not cycle off

you want me to reset SMC with the keyboard keys or is there a way to do it with out keyboard

it had water damage i cleaned and got power but no boot and how do i use smc bypass mode

with battery i get 19.5v and 3.55a with out battery i get 19.5v no A no fan spin PPBUS_G3H is 12v PP3v3_sus: 3.3 PP3v3_G3H: 3.4 PP5V_S0: 0v L7900: 0v 143.3 Oms L8410: 0.2v 3.635Mil Oms L7960: 0v 34. Oms L8000: 0v 95 Oms

now it works

did your board have water damage if so start there I cleaned it and heated up some to help with the cleaning if all your CD3215 HAVE THE WRITE VOLTAGES KEEP TRYING IF YOU have to use a other board to charge your battery

i got it to finish DFU now i get 19.4v 2.08A no boot or fan spin

I have an A1989 820-00850-A with no power. as soon as i plug in the cable to the other mac is says DFU and when i try to restore i get era see photo It has only 5V on ampmeter. does not turn on! 5.10V/ 0.240A PPBUS_G3H=12,3V PP3V3_G3H=3.24V U3100: PP3V3_UPC_XA_LDO = 3.287V PP1V8_UPC_XA_LDOA...