Hi there,
Typical case of AMD GPU failure... back in 2017 did a GPU reflow ( I'm aware reflowing is not a permanent fix) and worked fine with gfxCardStatus app (use the integrated video card only).
Last week, boot up normally and after not even 5min of light usage, crashed without any warning. I did try to restart same situation! So I did disconnect the battery and pressed to power button for 30sec. reconnected... PRAM and SMC reset...no luck ... now, when I plug in the magsafe (18.5V), the light remains green and not turning amber anymore...the macbook power up for 5 sec (front light is solid) fan spin at normal speed but no chime, no video and turn off by itself! I have the pdf. diagram and brd. files...where should I start? My guess is a short somewhere or a failing capacitor (nothing visible yet)...? What rails I have to check first? Thanks in advance!
Typical case of AMD GPU failure... back in 2017 did a GPU reflow ( I'm aware reflowing is not a permanent fix) and worked fine with gfxCardStatus app (use the integrated video card only).
Last week, boot up normally and after not even 5min of light usage, crashed without any warning. I did try to restart same situation! So I did disconnect the battery and pressed to power button for 30sec. reconnected... PRAM and SMC reset...no luck ... now, when I plug in the magsafe (18.5V), the light remains green and not turning amber anymore...the macbook power up for 5 sec (front light is solid) fan spin at normal speed but no chime, no video and turn off by itself! I have the pdf. diagram and brd. files...where should I start? My guess is a short somewhere or a failing capacitor (nothing visible yet)...? What rails I have to check first? Thanks in advance!
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