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(repair guide for no touch) |
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{{Repair Guide | {{Repair Guide | ||
|Device= | |Device=Poco X3 Pro | ||
|Affects parts= | |Affects parts=Logic Board | ||
|Needs equipment= | |Needs equipment=Soldering Iron, Hot Air Station, Microscope | ||
|Type= | |Type=Soldering, Teardown, BGA | ||
|Difficulty= | |Difficulty=3. Hard | ||
}} | }} | ||
{{stub}} | |||
== Problem description == | == Problem description == | ||
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Latest revision as of 20:35, 22 July 2025
| Poco X3 Pro No Touch (common fault) | |
|---|---|
| Device | Poco X3 Pro |
| Affects part(s) | Logic Board |
| Needs equipment | Soldering Iron, Hot Air Station, Microscope |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering, Teardown, BGA |
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Problem description
The touch of the device is not working after a drop or damage by a technician while repairing it.
Symptoms
- Touch not working
Solution
Generally in this condition there is the touch protocol line called TOUCH_SPI that gets damaged.
- Check diode value in the marked pins,
- You should get 0.500-0.700 diode value in these lines.
- Missing resistor:
- In the condition you got any missing resistor here and if its value is marked with 20Ω then you can run a jumper through
- if the missing resistor has value 1K Ω (shown in the pic) then you will have to replace it with 1K resistor.
- Here is the origin of these touch lines that come directly from the cpu(color coded to match the image on top):
