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| How To Repair IPad 6 No Power | |
|---|---|
| Device | IPad 6 |
| Affects part(s) | MainLogic Board |
| Needs equipment | Hot Air Station, Soldering Iron, Tweezers, Microscope, Solder wick, Solder Paste, Reballing Stencils, Flux |
| Difficulty | ◉◉◉◉ Specialist |
| Type | Soldering |
Problem description
iPad 6 shows no signs of life (no boot, no display, no vibration, no charging icon).
When connected to a DC Power Supply (DCPS), the device either:
- Current spikes directly to 1 A & above (dead short)
- Jumps directly 0.150 A and resets (partial boot but fails)
This model commonly suffers from shorts on VCC_MAIN, Tristar failure, or WiFi IC/PMU shorts.
*NOTE: A proper boot sequence should be 0.050 -> 0.060 -> 0.100 -> and climbing till it reaches 1.00 A*
Symptoms
- Completely dead, no Apple logo
- No reaction on charger
- No heat except possibly near shorted component
- DCPS shows high current
Solution
Diagnostic Steps
1. Check Battery Voltage
- A healthy iPad 6 battery should read 3.7–4.2 V
- If battery is at 0 V, iPad may appear dead
2. Try DC Power Supply Boot
- Connect directly to board
- Observe current draw:
| Current Behavior | Likely Fault |
|---|---|
| Instant spike above 1.00 A | Possible short on VCC_MAIN, WiFi IC or PMIC |
| Instant spike to .150A and cycling back | Tristar failure |
3. Check for VCC_MAIN Short
- Multimeter to diode mode → red probe ground
- Black probe on VCC_MAIN caps
- Reading close to 0.000 = short
4. Inspect Charging IC Region
- Check under thermal camera/rosin flux for a bad Charging IC.
5. Check WiFi Section
- Check under thermal camera/rosin flux for a shorted WiFi IC.
Repair Steps
1. Remove the Board
Separate battery first, remove board from chassis.
2. Identify Fault
Based on DCPS + thermal/rosin method:
- Shorted capacitor? → Replace
- Hot WiFi chip? → Replace
- Tristar short? → Replace Tristar
3. Fix the Short
- Replace burnt/shorted capacitor
- Replace WiFi IC
- Replace Hydra charging IC
4. Reassemble & Test
- Confirm proper current pattern
- Confirm charging
- Confirm successful boot
- Run WiFi test
- Plug into iTunes/PC for recognition