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Apple Computers
MacBook Pro A1278 or turn on
3
hace 5 años
hace 5 años
Good afternoon I hope you can help me, I have a MacBook Pro A1278 that at the beginning began to fail staying at the start on the white screen then turned it off from the start button, and then I got to where the user gets and no longer loaded it stayed on the black line !! Then I cleaned the fan inside it was very dirty but not much, disconnect battery and hard drive and pass the
Dry brush to clean the dust to the circuits! After everything was armed and the same and finally I turned it off and I learned it again and the vemtilator began to spin very fast and a lot of noise Peron no longer turned on the screen! Turn it off from the start button and now it does not turn on ..
I see that I hit the start button and I see that the fan turns on and turns once and turns off ... and also the power LED also flashes only once in white and then it does not turn on the
macbook !! Unplug everything except the processor or touch it
any !!
I would like to know if it can be turned on without a start button like a jump start! This is my MacBook model
https://youtu.be/3RhlD-TMHCg
I need help !! Please !!
hace 5 años
Disassemble again something may be short what you mention protects the PC and does not let it turn on.
Check the cables and especially the processor area if the fan failed to cool it very possibly has been screwed, although to get to that it is necessary to check the entire pc from the source to the outputs.
3
hace 5 años
Well, I already did it yesterday, I fell asleep late, connect and disconnect and nothing! But I didn't want to open the processor because I don't have diopnible thermal paste!
Will it be the motherboard that is burned?
I see that in the photos they mention the jump start !! But I don't see my model, what would be the jump start of this model?
hace 5 años
hace 5 años
Well, first of all use clean compressed air terminals. Wear an antistatic wristband as these are sensitive to loads Processor .
Now in the macbook of February 2011, it is enough to make a small but small short, it is NOT THE OPTIMATE therefore but it is so that you reach your fault, with this it is the famous as “Forced start” do not solder it, just give it a pulse of energy only with a screwdriver. Much eye that are the largest welds only those two, do not go to another because it is really screwed ahaha. This is at your own risk, greetings.
hace 5 años
hace 5 años
Look at the fan CONNECTOR and if I fly any of the inductor resistors or capacitors that surround it. Luck!
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