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Bericht: Antwoord op "MacBook Pro running slow when magsafe...
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Kiezers: oldturkey03 (Door beheerder besloten)
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Jeff Simons @jeffsimons

Rep: 25

Vraag

MacBook Pro running slow when magsafe disconnected

Gepost:

Hi,

I've noticed my macbook pro has recently started lagging quite severely when its running from the battery. As soon as the magsafe is disconnected everything lags including the cursor. I have tried the SMC reset, etc. but no change. I did have an issue with my battery indicator but I have since replaced it and it was ok. Any ideas?

Thanks

Dan @danj

Rep: 490,3k

Antwoord

Gepost:

Jeff - No doubt you have a very odd problem here.

I was thinking what could cause such a strange problem. Then it hit me!

Your charger supplies the needed power to run and charge your battery 16.5Volts but your battery is only 10.95Volts. Your system has to boost the voltage up using a FET to step it up the rest of the way. But what would happen if the FET was bad? Then the batteries voltage would pass but its just enough to run your system (just slower when running on battery Vs the charger).

So your main logic board has a problem in the power section.

Are you up to replacing a few SMT components or do you just want to replace the logic board and be done with it?