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| Surface Pro 4 does not turn on | |
|---|---|
| Device | Surface Pro 4 |
| Affects part(s) | Motherboard |
| Needs equipment | |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
Problem description
The device does not turn on.
Symptoms
- The device doesn't turn on.
- The device doesn't turn on after a battery replacement.
Solution
If your device stopped turning on after a battery replacement, it is highly likely that a component on the motherboard has failed (I discovered this the hard way).
To fix the device, we will perform a few troubleshooting steps.
Diagnostic Steps
There are 3 components that commonly fail: a 0-ohm resistor, two diodes, and the PMIC.
First, let's check the 0-ohm resistor. Below is an image showing where this component is located. Using your multimeter in resistance mode, measure the resistance, it should be 0 ohms. If you measure anything different, the component is faulty.
The next two components to check are the two diodes. Using your multimeter in continuity mode, ensure they don't have continuity across them. Also, verify there is no physical damage, such as cracks or holes.
The next component to check is the PMIC IT8526VG. This component is commonly shorted. Follow the image below.
If one of the lines is shorted inject 1V with a DCPS and you will likely see the PMIC hot under a thermal camera.
Repair Steps
The repair of these issues i quite straight foward the resistor is a