Chris Stables

Making up some leads for the DCPS and would like to know does the MacBook determine what wattage magsafe it is using from...

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...

If you are going to put thermal paste back on the CPU than Artic silver will be fine. Although I think it would be a waste of time and money as thermal paste will only dissipate the heat when underneath a heatsink. But that is just my opinion.

Firstly you should not rely on ZXW for diode readings, you should compare with a known good board. ·         Have you got red probe on ground when testing? ·         What readings are on 31 and 32? Are they the same as 34? If these pins are all reading 0.007 than are four things you need to check. 1.       Connector. 2.       C4633 3.       C4632 4.       The small audio IC (U5002) It is hard checking camera circuits as you need to have the flex connected. Also the camera app should be open when checking power rails. You can do this easy with an iBridge.

Yes it is possible to change a part on the logic board which could bring the phone back to life. But to do this you would need the proper equipment and experience as first you need to know which line is faulty and what component on that line is faulty. As for replacing the logic board it would be easier to buy a second hand iPhone 6. It would work out about the same price. However if you have already brought parts for the one you have it wouldn’t hurt to buy just the logic board but make sure the original home button comes with it.

Firstly make sure you have ruled out parts. And make sure: ·         you are using the right Tigris IC (TI SN2400AB0) not the (SN2400B0) ·         Make sure Tristar is soldered properly. ·         Check SWI circuit. ·         Check Q2101 you can jump it if required. ·         And don’t forget the battery connector.

More than likely the water has caused damage on the logic board. Try cleaning the connector and the surrounding components with Isopropyl alcohol. Other than that you would need the right equipment to diagnose the problem like multimeter, Broadview software and schematics.

You will not know for sure until you try and activate it but if it is still activated on the previous owners iCloud account there is nothing you can do besides contacting them or ask for a refund. Sometimes those sites used for checking IMEI show cached information.

Did you recently have the screen replaced? Siri uses the microphone on the front camera flex assembly. You may need to have it replaced.

Forget about the backlight until you have image. You said mainboard connectors all tested well. So you are getting ·         1V8 on pin 5? ·         5V7 on pin 1 and 3? What are diode readings of pin 7 and 9?

No they are not interchangeable. They have different size connectors and flex cables.

Lift the screen and put pressure on the bracket on top of the home button and with the other finger press the home button and see if it clicks. If it doesn’t click the home button you purchased is probably faulty. If it does click find a screw to replace the one that is missing.