Hi
I am in need for some help to fix my old Macbook Pro ( 17", A1229, 2.ghz)
The Macbook pro was working fine until recently when I had to check the fans and sensors due to AHT reporting one was not working.
So I opened it up and done some cleaning and went to boot it up which it did but got the black screen, no chime, solid white light on the latch in the front, no back light but fans turn on and hard drive spins up.
I done the PRAM and SMC reset but not no luck
I was puzzled so I done some research and everyone suggested do a reflow, so i followed the ifixit guide but no luck,
I put everything back together and to find a weird problem that i have to press the power button 3 times or more to get it to start. Everytime I press I see the fans move a little and hear the hard drive click but doesnt start up
after few more presses it does start up but with same symptoms, black screen, no back light, solid white light on latch, no chime.
I took the top case off and tried starting macbook by jumping power on pads.same thing have to keep pressing the pads a few times before it starts, Also before the SYS RST pads used to restart the laptop but that does not work neither
I checked the RAM, one by one in each slot, the charger.
Charger has green light
Same thing happens when powered by battery
I downloaded the schematic diagram, found via a google search and started measuring and following the flow of power as seen on page 3. Measuring voltages on all the power lines but I am hoping you can help me on what points to measure and if it requires me to replacing components then I can do that, I have a multimeter and access to a oscilloscope
I really don't think it is anything major, I think it is a capacitor, resistor or chip that has gone.
I know these models had the nvidia problem and people repair them but I want to repair it myself with your help
Apple store do not repair these any more.
I was hoping if someone can help me please
I will appreciate it so much
I look forward to your reply
Many Thanks
Kind Regards
I am in need for some help to fix my old Macbook Pro ( 17", A1229, 2.ghz)
The Macbook pro was working fine until recently when I had to check the fans and sensors due to AHT reporting one was not working.
So I opened it up and done some cleaning and went to boot it up which it did but got the black screen, no chime, solid white light on the latch in the front, no back light but fans turn on and hard drive spins up.
I done the PRAM and SMC reset but not no luck
I was puzzled so I done some research and everyone suggested do a reflow, so i followed the ifixit guide but no luck,
I put everything back together and to find a weird problem that i have to press the power button 3 times or more to get it to start. Everytime I press I see the fans move a little and hear the hard drive click but doesnt start up
after few more presses it does start up but with same symptoms, black screen, no back light, solid white light on latch, no chime.
I took the top case off and tried starting macbook by jumping power on pads.same thing have to keep pressing the pads a few times before it starts, Also before the SYS RST pads used to restart the laptop but that does not work neither
I checked the RAM, one by one in each slot, the charger.
Charger has green light
Same thing happens when powered by battery
I downloaded the schematic diagram, found via a google search and started measuring and following the flow of power as seen on page 3. Measuring voltages on all the power lines but I am hoping you can help me on what points to measure and if it requires me to replacing components then I can do that, I have a multimeter and access to a oscilloscope
I really don't think it is anything major, I think it is a capacitor, resistor or chip that has gone.
I know these models had the nvidia problem and people repair them but I want to repair it myself with your help
Apple store do not repair these any more.
I was hoping if someone can help me please
I will appreciate it so much
I look forward to your reply
Many Thanks
Kind Regards
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