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...

This is a faulty component on the backlight circuit. It is becoming an increasing problem with the 8 plus. Usually it is a small resistor which has failed causing the screen dimming in that exact place. You will need to find a repair shop that does microsoldering. It will be a fairly cheap repair.

You need to. 1.       Check the connector for damage under magnification. 2.       Diode mode connector and compare with a known good board. 3.       Check pullup resistors. (Could be a noisy data line) you may need an oscilloscope. Let us know what you find.

An iPhone that randomly restarts when not using any apps usually indicates a parts problem. The two main parts that will cause this are battery and dock connector. Forget the error report and install a new battery. If it still shows the same symptoms try another dock connector.

First you need to install a new battery then dock connector. This will rule out parts. A phone that is charging and discharging fast is usually caused by a bad battery. Have a look with it connected to a PC with 3uTools installed and see what the battery health is.

This usually occurs if some of the solder balls under the APU have oxidised or cracked, resulting in the system not being able to complete its self-check.  I think you will have to get the APU Re-balled to fix the problem.

It doesn’t matter what model number the iPhone 7 plus is, it will fit into the housing without a problem. Remember you will need the transfer your home button. If your original home button was destroyed you will need to purchase a universal home button to have the return home function to work.

This sounds like an audio IC repair gone wrong. They have applied to much heat to the board resulting in the baseband CPU solder balls bridging. Check around the big audio IC and you will find it has been worked on. If I where you I would try and get my money back.

You will need to send your phone to a microsolderer so they can diagnose and repair the problem. If the repair shop tried another camera and it didn’t work it will be board related. If you need face ID you will probably have to go to an apple store for a replacement phone.

You will probably need to use a dremel and a dentist bit. That’s what I use on corroded water damaged phones although I have never tried it on a screen back plate. If you just need the back plate it would be cheaper and easier to purchase one.

It would be hard to answer this question and I would not accept a repair like this. My thoughts would be that since the Wi-Fi starts working after 5 minutes you could have a cracked or oxidised pad under the Wi-Fi IC. As the phone gets warm the connection comes back. You could try and test this by applying pressure to the Wi-Fi chip. If that fixes the problem you would just need to re-ball it. It also could be a problem with your SCL or SDA lines. You would need to check all the pullup resistors. In older models it was easy to replace the Wi-Fi chip but the 7 is more difficult. Sometimes the pads get pulled from the chip so you need to rebuild them, if you cannot you will have to put a new chip on which would mean unbinding the Wi-Fi address from the NAND.