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Repair guides and disassembly information for the MacBook Pro 16'' released in November of 2019. Model A2141, EMC 3347.

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MacBook Pro 2019 won't power on, 0W on the charger

I hadn't used my MacBook Pro in about 10 weeks after leaving it in sleep so when I went to go use it, it was basically had an empty battery. I then went to plug it into various chargers I had with no luck but when I plugged it into my 100W Lenovo USB-C charger, it powered up, showed 0 percent, then woke from sleep. Then I left it for about an hour or two but when I went to open the lid, it would not wake up. I tried the SMC reset, using different chargers, and nothing worked. I also attempted to get it into DFU mode to perform a recovery on another Mac but it wouldn't show up. I even used a 140W apple charger from my M1 MacBook Pro and that didn't work either. If it helps the fans don’t spin and the touchpad doesn’t click at all

Also some observations I have is that when I use USB-C cable with a built in wattage meter, the first one lights up then turns off immediately and the second USB-C cable with a wattage meter lights up and then get's stuck at 0 watts for some reason.

Is there anything else I can try to get this fixed? There is no water damage and was working a few hours ago. I left it plugged in for hours but it won't turn on and holding the power button also didn't seem to do anything either.

I also tried disconnecting the battery and plugged in the cable and it does the same thing as before. I also disconnected the battery, held the power button, then reconnected and it still won’t power on with the same behavior from before. No fan spin or anything.

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To properly test your system you need to have the USB power meter inline with the charger so it sees the power from the charger. Otherwise it's only seeing power being offered by the systems port.

Did you try the other USB-C ports to see if one or a given side was failing? I would give that a try.

Do you tend to plug in a fair number of devices into your ports? You may have worn or dirty contacts within the port/s. That will require replacement of the port assembly.

Sadly, this series had issues with its charging logic within the main logic board which will require deeper skills and the needed tools to replace the bad chip Texas Instruments CD3217B12 which you can see in Step 9 in this MacBook Pro 16" 2019 Teardown even I no-longer do micro-soldering as my hands are not steady enough.

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Tried all the USB-C ports and they all behaved the same. I don't use the ports very much other than to charge. Will get my hands on a USB-C meter and see if that changes anything but not sure if it will.

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I found my USB-C meter and it is getting stuck at 5V and 0.03A instead of going to it's charging voltage of 20V. Is this an indication that there is a board level issue?

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@jimmysofat6864 - Not good that's the chip failure.

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@danj I also checked the battery with my multimeter and it's reporting 0V so it's not charged. What are the chances that it might turn on if I manually charge the battery with my bench power supply or will the chip failure prevent it from charging normally in the future anyways and report "not charging" via USB-C?

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@jimmysofat6864 - To be clear the fact the battery is totally dead is not a surprise. As the system will exhaust it out.

Using a Bench Power Supply should at least get power into the power rails of the logic board (without the battery) so you can go a bit deeper checking the chips logic referencing the schematic and board views.

As far as the battery you do need to be very careful as it's easy to over power the battery causing it to fail and I'm sure you've seen a Lithium battery go up. You really need to monitor the batteries temp and react quickly. I don't recommend doing it.

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@jimmysofat6864 this may just be totally be for informational purpose only since we do not know your skill level. We do not know your skills for checking the board or maybe even having to replace components on the logic board.

Your MBP has the 820-01700 logic board which has a common failure which is a failing of U9580 TPS6218 buck converter and supplies SSD voltage. If that fails it can create a short to ground of your power rail PPBUS_G3H and may allow 12V to the SSD IC's ,which will be destroyed. That would be a catastrophic failure.

Some quick checks you can perform if you have the skills and a multimeter are to measure Fuse F7001, it must have at least 12V if not or if fluctuate, check L9081, that must have 2.5V. Next measure C9591 which must have 2.5V. If it is less you must suspect U9580 to have failed. Check for short to ground by placing your meter in resistance mode and measure the resistance between L9081 and ground. Let us know what it shows. If there is a short to ground, it will most likely be caused by a failed U9580

Post a couple of well focused pictures of your logic board and specifically of the area where U9580 is located. That way we can see what you see and maybe help you further, if that is the way you want to go. If not, then I would suggest to either have someone that is familiar with board level repair work on it. Since this is a common issue it may have actually destroyed the NAND on your logic board etc, and you may need to consider replacing the logic board altogether. You could determine that by removing U9580 and see if the short to ground has been resolved if yes, replace U9580. If not, then your board had a catastrophic failure and would need some very costly and uneconomical interventions :-)

Again, we do not know your skills, your tools and your resources so this may all just be academics :-)

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