More actions
| IPhone XR not powering on with heat above the CPU | |
|---|---|
| Device | IPhone XR |
| Affects part(s) | Motherboard |
| Needs equipment | |
| Difficulty | ◉◉◉◌ Hard |
| Type | Soldering |
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Problem description
iPhone XR will not power on. Before prompt to boot there is heat above the CPU
Symptoms
- You get 1A or higher current draw before prompt to boot on DC Power Supply
- You feel heat above the CPU
Solution
- You either have a cracked Speaker Amp (U5002)
- Or a shorted cap on PP_SPKAMP_TOP_VBOOST
- Use a Thermal Cam or Freeze Spray to pin point the root cause of the short
- If Speaker Amp is cracked, replace it
- If you have a shorted cap remove it and then check PP_SPKAMP_TOP_VBOOST with multimeter in diode mode to verify short is no longer present. You don't need to replace shorted cap if short is no longer present
Migrated from old wiki