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I am trying to fix a macbook Air (A-1466) and the issue is sometimes not booting at all. Sometimes boots until login screen and goes off. No history of water damage. Tried NVRAM reset. But no luck. Appreciate any support.

I am working with a 820-00850. When power up without the battery connected, keep on loading with the apple logo (progress bar filing slowly and checked for about 10 min and turned off by me since fan is working very fast). Fans are working at their maximum speed from the beginning. It takes...

Hi, I am working with above Touch Bar macbook and when turn on, Apple logo appearing and progress bar goes for about 10-15 seconds, then screen goes off and fan works very fast. CPU is getting very hot too. Where should I check? After few seconds again apple logo appear and goes it as a cycle.

I am working with a macbook air which works with flickering. We don't have an ultrasonic cleaner and cleaned with alcohol. After drying also it flickers. What should I do?

I am working with a computer not backlight or no video. CPU is getting hot. I took following voltages without connecting the LCD assembly. PPVCC_S0_CPU: 1.8V PP3V3_S0SW_LCD - 0V SMC_LID: 3.4V PPVCC_S0_CPU 1.8V P3V3_S0SW_LCD: 0V From where can I start tracing? Up to what point we can trace...

Hi, the above board has following voltages. PBUS_G3H: 8.6V PPDCIN_G3H_ISOL: 16.5 pp5v_s5: 4.3V PP3V42_G3H: 5.1V PPVIN_G3H_P3V42G3H 16.2 PPVIN_G3H 16.5 SMC_PM_G2_EN. Fluctuations from 0 to 3 (moving fast and difficult to read min and max using multimeter) PPVRTC_G3H: 5.36 U7090 was...

Hi There. I have MacBook A1502 2014 model,820-3476-A its not powering on and when I connect charger its R7020 getting hot .and voltage 14.5 V, Please help . Thanks.