[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] JoraForever:
So my brother's zuk z2 has been broken for months now, and no repair shop could repair the phone.

I did a lot of digging and i found out that zuk z2 has a problem with quick charge 3.0 (It technically supports it but it doesn't have the necessary hardware for it)

If your zuk z2 (plus) has these symptomes this fix is guaranteed to work

Not charging.

Not turning on (Sometimes it might turn on).

Notification light blinking.

Heating in the lower part of the phone near the charging port. (If your zuk doesn't do that, then removing the cx chip will only disable fast charging)

The problem:This tiny chip with cx on it: https://i.imgur.com/YD8Eh2b.jpg

This chip is responsible for quick charge and it only supports quick charge from the original charger (that is what i was told).

When charging with an qc charger it may short out. That is where the heat is coming from.

The solution

You need to remove that chip.

You can just pry on it with a screwdriver and it pops out like its meant to do that.

Anyone can do this procedure at home, but you need a phone repair kit(<1$ online).

Or you can take your phone to the local repair guy and send them a link to this guide.

If you decide to do this by yourself i advise you to watch a teardown video, because there are some plastic tabs that you don't want to break.

1) First off, remove the sim card tray and then you need to remove the back glass, use a hair drier at the lowest setting and heat the lower part of the back of the phone (where the zuk logo is) around the perimeter.

When the glass is hot, use a suction cup to lift the glass and then use a plastic tool (only plastic tools) to slice the adhesive.

Try the suction cup method 3-4 times with heating, because the suction cup may not be strong enough to lift the glass up.

If the suction cup is not strong enough to lift the glass away, use a very thin and short piece of metal, wedge it between the glass and the plastic body (this will slightly damage the plastic) and the glass should pop out if it's hot.

Be very careful at the left upper side of the phone (the camera side) because there is the volume and power button ribbon and the battery ribbon. You don't want to damage those.

This is maybe the hardest part of this teardown.

This is how it looks like once the back cover is off: https://i.imgur.com/XGD5m7F.jpg

2) Because the chip is on the back side of the motherboard you will need to remove almost every component except the battery and some other smaller components.

Remove all screws.

Attention! one screw is under the battery ribbon.

Then try to remove the plastic.

The top plastic piece needs to be pulled from the opposite side of the back camera because there is a plastic latch near the back camera.

Pull that plastic piece up and then to the left (away from the back camera).

The lower plastic piece should be pulled from the upper most part, but it should be pulled first up and then pulled towards the top side.

If the piece doesn't move you need to remove residual adhesive or try to remove the lower plastic piece from the headphone jack side.

This is how it should look like without the plastic top cover: https://i.imgur.com/qEtXTg7.jpg

This is how it looks like without the bottom plastic piece:https://i.imgur.com/RlVhDQK.jpg

The problematic chip is in the red circle, but it is on the other side of the motherboard.

3)Unclip the connections, the antenna connectors, and the selfie camera.

By this point you should have removed the sim card tray, if not remove it NOW.

4)Remove the motherboard with the back camera (its held with some copper tape).

Inspect the charging port.

It should look something like this: https://i.imgur.com/bKiN5tG.jpg

The chip is very small.

This is how the chip looks like when removed: https://i.imgur.com/fCSJBds.jpg

This is the chip you want to remove: The one with CX on it!

This chip: https://i.imgur.com/YD8Eh2b.jpg

5)Remove the chip with something made out of metal, like a screwdriver.

6)Reassemble the phone and enjoy your charging phone.

Also this is why you would want to do it yourself.

This is what a "repair guy" did to the phone: https://i.imgur.com/5BiMn6s.jpg

He said that there was a short on the motherboard and the phone is completely dead.

The phone works, but now i don't have a power/volume button.

He obviously used a metal tool, as seen by the scratches left on the metal inside the phone.

So don't use a metal tool.

Edit: Removing this chip will only disable fast charging, if your device is perfectly working, or has different symptomes, don't remove this chip.

Edit2: The thread was broken,(only one image was showing). My dumb ass inserted the images wrongly.