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I have purchased a few water damaged A1342 MacBooks. They were in storage and the sprinkler system came on. They have not had power to them when I got them. I cleaned a couple of the logic boards with alcohol and let them dry overnight. When connected to power, the magsafe led is very dim and will not turn on at all. I know the battery has absolutely no charge. I tried a new dc-in board with the same results (may have purchased a defective board). Will the dead battery cause the macbook not to boot with ac power or should I try another dc-in board?
Remove the bottom case. Remove the battery connecter from the logic board. press and hold the power button plug the charger into laptop. wait for 10-15 sec with holding power button and charger ins to it. release the power button and press it again. your macbook will sure power up. this is the process to bypass the SMC which diagnose the whole laptop during starting up. i have a same a1342 with liquid damage . but power up with this process but battery is not working . every liquid damage is working with this process. thnx
The first thing to do now is reset the SMC and PRAM, and see if it helps: Hold option, Command, P and R for 25-30 seconds For the PRAM, refer to the following steps: Note: Portable computers that have a battery you should not remove on your own include MacBook Pro (Early 2009) and later, all models of MacBook Air, and MacBook (Late 2009). Shut down the computer.Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.Release all the keys and the power button at the same time.Press the power button to turn on the computer.Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC. If neither helps, board level repair is required, or a new DC-In board (likely both). I would also replace the batteries ASAP if you fix the laptop since it will likely fail prematurely.
Hi I have a water damaged MacBook pro with dim led on megasafe which I have forced on using the method of disconnecting the battery from the board as outlined above Now it’s started up what is the method to get it back to normal? Battery connected and charging? Thanks in advance JJ
Hey SIMRAN, I was able to boot up my computer using your method. It will only boot up if I use your method. What do I need to do now to fix the computer? Do I need to replace the battery? Thanks, Josh
hello, i have a water damaged macbook a1278 after i did a isopropyl bath and let it dry thoroughly i get the green light when i plug in the charger but it does not start, not even if i do a keyboard bypass. If i connect the battery though, the laptop powers up by itself and the fan goes in full speed, displaying nothing on the screen. i don’t get any sounds either. In orded to turn it off i need to take out the battery. Any ideas? many thanks
Hi Simran, I have a water damage macbook which had the same dim light and can’t smc reset. So i send it to the technician and they changed the keyboard and it was working fine. Then my itchy fingers did a smc reset and not its back to square one. It won’t turn on no matter what i do? So do you think its the motherboard now?
