I changed the battery and the macbook won't turn on. After connecting the charger, it also cannot be turned on. If I leave it on the charger for a long time, it heats up a bit, but it cannot be turned on.
When changing the battery, I forgot to hold the yellow button on the logic board, could this be the problem? Will it be necessary to replace the logic board? Or is there another solution?
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I already tried resetting the SMC but it didn't help. I checked several times whether everything is connected correctly. Well, I simply don't know how to fix a macbook.