Rice? No way. We'll tell you the truth: it requires you to be a technician and have experience and expertise.
We'll walk you through it step by step.
Step 1: Without connecting it to power and without turning it on, open the device and inspect it carefully.
Look for any moisture seals. For example, there will be some on the motherboard, on the screen and on the charging flexor, so if any of them is active, in that area of the active seal it is very likely that there are traces of moisture.
Step 2: Look at it millimeter by millimeter. Take your time. Don't clean it and don't put it in an ultrasound machine all at once. You must first of all be aware of the area where the moisture is located and then concentrate on it to clean it.
Step 3: If you don't see anything and the device is still not working, remove the shielding where you suspect sulfate may be present.
Step 4: As soon as you get moisture, sulfate or rust remember the area and clean it with 99% alcohol or acetone. Then blow some hot air on it to evaporate the liquid you have cleaned it with.
Step 5: If cleaning the affected part does not repair it and you can replace the part, do it. You can find all kinds of quality spare parts at your trusted supplier 4Phones.es. Now, if it is the motherboard that is affected, you have to make measurements with the multimeter in order to investigate where the short circuit is. It may be that the short is in a component such as a capacitor, a resistor, a diode or under an integrated circuit.
If you want a more detailed explanation, check our video:
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