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...

The best things to do are. 1.       Open the phone up and disconnect the battery. 2.       Remove the logic board from its housing. 3.       Swish the board around in 99% Isopropyl alcohol as well as brushing the exposed components like connectors with a soft toothbrush. 4.       When the board has dried you can put it back in the housing. You will know when it has dried when you cannot smell any alcohol on it. 5.       Install a new battery. If it doesn’t power on after this you could try another screen but it will most likely be due to faulty component on the logic board due to the water and you will need to send it to a reputable repairer who at least should be able to retrieve your data if it wasn’t backed up.

The first two things you need to do first is ·         Rule out faulty parts. Put the logic board in a known good housing with known good screen and battery. ·         Try an update with iTunes.

The memory on the iPhone is soldered to the logic board and cannot be swapped without a programmer. The 5s has three memory sizes 16GB, 32GB and 64GB. The iPhone 5s logic board can be put into any 5s housing. So yes you can swap logic boards but make sure it has more memory than the one in it.

Some things you can try. ·         Check the connector is sitting flush. ·         Rule out the battery being faulty by replacing it with your old one. ·         Try updating the phone with iTunes.

C0633 alone is not required for the iPhone 6 to boot. But if the line it comes from is faulty it will indeed stop the phone from booting as it is the main NAND power rail.

Purchase a decent magnetic screwdriver. The magnetic screw drivers hold the screws while installing them.

I am not sure why you removed U3701 half backlight would not indicate that it is faulty with OL on pin 35. This has only added variables to the repair. You need to follow the PP_LCM_BL_CAT1_CONN from the connector to U3701. Check the connector pad and not just the pin. You say that Fl3902 is not faulty. What is the diode reading on both sides of the pads? If the PP_LCM_BL_CAT1_CONN line is continuous to U3701 the only thing that would cause OL on pin 35 would be a missing or damaged pad at (C1) under U3701. The only time I have seen A1 and B1 shorted together is when other components have been bridged like FL3903 to Fl3901. Check very closely under your scope. Remember the more things you try and replace on this repair will cause more variables. Make sure the component you remove is indeed faulty.

You would need to rule out the screen so I suggest trying a replacement one and see if it behaves the same.

No they are not compatible as the connectors are a different size.

MF stands for millifarad and is one thousand of a farad so: ·         1 mF = millifarad one thousandth of a farad ·         1 μF = microfarad, one millionth of a farad ·         1 nF = nanofarad, one billionth of a farad ·         1 pF = picofarad, one trillionth of a farad The farad is the SI unit of electrical capacitance and is the ability to hold an electric charge.