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I did not get an image.USB No Activity no Lights and Keyboard Lights not working also.

Hello sulit here again. I have another macbook air no display green light present.Upon checking putting usb to chime,no display but fan is spinning. Tested Components F7700=8.5v L7701=0v D7701=0v R7704=0v For those who have an experties for this issue please help me. Thanks

USB_TPAD_N = .472 Resistance (0.0V) USB_TPAD_P = .491 Resistance (3.1V) TPAD_VBUS_EN= .705 Resistance (3.3V)

It was no power due to PPVIN_S0_CPUVR_VIN had corossion I just clean and it power on. button_disabled is 0v sir Smc_lid 3.4V PP3V3_S3_PSOC = Present

Hello Jhon here again. I have macbook pro A1502 has no keyboard and trackpad. Pin 4 =3.4V Pin 30 =3.3V PP3V3 _S3_PSOC = 3.3V If RIO Flex Connected that is the error shown on the screen. Thanks for the help. br, sulitunlock

Thanks a lot sir.

I was able to enter the boot menu but after few seconds its shuting down only once. But now I cannot enter to boot menu. Maybe you have good bios file sir I never have any here.

Hello Jhon here Again, I have macbook pro A1502 it has Complete Power Rails but cannot proceed to turn on.If i will remove the SSD the screen show (?) question mark. I also try to boot my bootable drive but the same cannot proceed to boot up. I did SMC reset and the same issue. I notice...

Up for this post, I have the same issue here. I hope sir rossman team can see this post. Thanks

Thanks sir the macbook is successfully fixed now. It was C7373 Is the only one cause of the issue I just replace a new one from other motherboard and it successfully fixed. Thanks a lot sir

Hello jhon here again, I have macbook air A1466 unable to boot keep on showing battery charging in lowbat mode even no battery connected. History It was fully dead due to a shorted capacitor I just removed and replace the capacitor and it power on with the charger alone, So I expected all is...

Thanks a lot for helping me.

Thanks a lot sir, macbook is successfully fixed. I just replace a keyboard from a1278 2010 the same model and the macbook is working perfectly now.

I tried to remove the upper ram the macbook is powering on but I have another issue. I need to replug the battery every time I want to power on the macbook even I will remove the keyboard it has the same issue. I tried power supply to power on the macbook it appear 0.8A but still no fan spin...

Thank you sir. I will try later.

Hello, Newbie here I am new on macbook repair.I am a youtube follower sir Louis Rossman channel. I have macbook pro A1278 it was a keyboard problem and I already fix it but after 1 week my client is back and complaining the macbook is not turning on and I notice I heared 3 beeps when we put...