Chris Stables

I don’t know a lot about MacBook circuitry and I don’t advertise their repairs but there is one customer who does send...

Any idea where I could purchase a QFN8 to DIP8 Adapter that will fit a bios chip off the 820 00875 board. The only one I...

I got sent a mac which had the U5860 temp sensor torn off along with all the pads on the board. It would take ages to boot...

Would someone be able to tell me the orientation position of U5860 on the 820-00239 logic board. I can only make out a...

You can purchase a home button FPC for a couple of dollars but if you don’t have the equipment and microsoldering experience it will be extremely difficult to do the repair. For an experienced repair shop it would not be a big job and you should get a quote.

The only time I have seen this is when a phone developed phantom touch. As this is an iPhone 6 plus it is a good candidate for this scenario as it is a signature fault. You will not be able to update a disabled phone through iTunes. You can only do a restore. You could try with 3Utools it has an option to restore with users data. You can try this once and it should bring you back to the enter passcode screen. I have tried this on one phone and it didn’t recognise the passcode I put in, and went back to the disabled screen.

It sounds like you have damaged the home button flex. The one coming off the screen that connects to the logic board. Check around the 90 degree bend you might need a magnifying glass but I suspect you will find a microscopic tear. You will need to replace your screen again.

This is a common problem with the iPhone 8 series caused by the ground pins at the end of the home button connector being pushed in. If you have some sort of magnification you should be able to pry them out into their normal position. This is the FPC that your cable in the bottom image connects to

The component missing is an inductor on the main power rail. Unless you removed this yourself I would say your phone has a power rail short probably VCC_MAIN or possibly a charging problem.  Obviously someone has been trying to diagnose the problem. You will need a multimeter and some board view software to continue with getting this phone to boot.

You haven’t described your problem properly but if it is only an audio issue it would point to the audio IC. It is a signature fault with this model. If it also has any of the following symptoms it would confirm it. These are the symptoms of audio IC failure on the 7 series. ·         Callers can't hear you ·         You can’t hear callers ·         Voice memos are greyed out ·         Sound doesn't record on videos ·         Siri can't hear you ·         You hear static on calls ·         Speakerphone doesn't work ·         Phone takes a very long time to boot The audio IC repair requires microsoldering as jumper wires need to be installed.

Are you using a certified cable? By the sounds of it the charger might not be putting out the correct voltage or maybe the voltage is to dirty.  Your phone has two charging IC’s “Hydra” and “Tristar” The Hydra IC lets the Tigris IC know that it can start charging. If the Hydra IC thinks there is a problem with the voltage it will not give Tigris the okay to charge.

If you have ruled out a screen problem the next thing you need to determine is it the backlight or image. When it goes black shine a torch on the screen and see if there is an image displayed. If there is it would point to a backlight problem probably a small filter that is not making contact properly. If there is backlight but no image I would be looking for long screw damage.

First off. There is no need to put a heat gun near the logic board. When you don’t smell alcohol on the board it means it’s good to power up.  I think it would be best to try another screen and see if the phantom touch is still happening as I have seen some of the X model where it has turned out to be oxidised pads on the interposer board. If it is the screen causing it from the liquid damage you are better off replacing it.

Have you ·         Checked all the connectors you removed are seated properly? Not just the battery connector but the LCD and touch as well ·         Made sure the battery is charged? The phone might take a few minutes on the charger before turning on. ·         Connected it to a PC or mac to see if it is recognised? It could be the screen has become faulty. Let us know the results.