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Mis sur le marché en juillet 2018, le MacBook Pro 15", modèle A1990, est muni d'un écran de 15,4 pouces avec rétroéclairage LED et technologie True Tone et d'un processeur 6-core i7.

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I can not connect any USB devices

Hi everyone. Recently, I replaced a swollen macbook battery after many years of use. On top of being swollen. The battery life was terrible (2 hours) and the USB ports were always disabled (USB accessory disabled notification). So I decided to replace the battery with a new (non-genuine) one. The battery life has drastically improved. However, the USB accessory problem is still there and the battery drains really fast in sleep mode which is very weird. As a result, if I do not turn off my mac in the evening. The whole (new) battery would drain leading to an empty mac in the morning. Also, since the battery change, two of the ports do not work at all... (less of a problem but still annoying). I think all of these problems may be linked and maybe I should test the macbook pro with another new battery? Could someone help me I am a bit lost. Also, I tried to reset SMC and PRAM many times to no avail. And reconnecting the battery to the logic board.

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What might be causing this problem is something is shorting in the usb board. There are three possible options:

1) The swollen battery has damaged the board and you might be in for a new usb board. If so, you should be able to replace that single board, which shouldn't be too expensive

2) On replacement, the pins on the usb board could be making contact on another metal surface and shorting.

3) The usb board got damaged and is shorting.

I think of this because your battery is draining, resetting the SMC has no effect, it's a new battery and your USB ports aren't working.

What we can do from here is disconnect the usb board and remove it temporarily. Then, leave it on overnight and see if the battery lasts. Note that constantly draining the battery via short circuiting will ruin it. Depending on how long it has been going, you might be in for another battery. Let me know if removing the usb board improves things, because then we will have singled out the source.

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affeaap sera éternellement reconnaissant.
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