Tablet · Apple · iPad 4
Apple iPad 4 Logic Board Repair
Logic Board Repair guide for the Apple iPad 4
Before you begin
Tools
- Heat gun or hair dryer
- Suction cup
- Guitar picks for prying
- Precision screwdriver set
- Plastic prying tools
- Anti-static wrist strap
- Precision tweezers
Parts / materials
- iPad 4 replacement display adhesive strips
- Isopropyl alcohol (99%)
Safety
- Wear safety glasses to protect against potential glass shards while prying the digitizer.
- Disconnect battery power immediately after opening to prevent electrical short circuits.
- Do not heat the rear casing near the battery directly to avoid thermal thermal hazard.
Overview
Step-by-step
- 1
Heat the front edges
4 minApply a heat gun along the glass border for 2-3 minutes to soften the perimeter adhesive.
- 2
Attach a suction cup
2 minPress a suction cup onto the lower portion of the screen near the home button.
- 3
Insert an opening pick
3 minPull up on the suction cup and slide a plastic guitar pick into the seam under the front glass.
- 4
Slice perimeter adhesive
8 minSlide picks around the top, left, and right edges, taking care to avoid the Wi-Fi antenna at the bottom right.
- 5
Open the digitizer panel
2 minGently fold the front glass open to the right like a book cover without straining the flex cables.
- 6
Unscrew the LCD panel
3 minRemove the four Phillips #00 screws securing the corners of the LCD assembly.
- 7
Lift the LCD panel
2 minInsert a plastic prying tool along the top edge of the LCD display and fold it forward toward the home button.
- 8
Disconnect the battery contact
2 minSlide a plastic card or pick between the logic board power pad and the battery terminal to isolate power.
- 9
Disconnect the LCD flex cable
2 minPeel back the protective tape, flip open the ZIF lock lever, and pull the LCD ribbon cable out.
- 10
Disconnect the digitizer flex cables
2 minFlip up the retainers on the two digitizer ZIF connectors and detach the ribbons from the logic board.
- 11
Remove front glass and LCD
1 minLift the digitizer and LCD panels completely away from the chassis and place them in a safe area.
- 12
Disconnect the Wi-Fi antenna
2 minUse a spudger to pry the Wi-Fi antenna coaxial connector straight up from the logic board.
- 13
Disconnect the dock flex cable
2 minPry up the broad Lightning connector flex cable from its socket on the lower end of the board.
- 14
Unscrew the logic board
5 minRemove all remaining Phillips #00 screws attaching the logic board to the aluminum rear casing.
- 15
Soften logic board adhesive
3 minWarm the back of the metal casing directly behind the logic board with a heat gun for 1 minute.
- 16
Remove the logic board
3 minInsert a flat plastic opening tool under the board edge and lift it carefully out of the frame.
After your Apple iPad 4 logic board repair
Power the iPad 4 back on and test the logic board repair function before you put every screw away. Check touch/display response, charging, cameras, buttons, and wireless as relevant to this repair. If something fails after closing the device, reopen carefully and reseat the connectors for this Apple iPad 4 job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Apple iPad 4 repair context in the encyclopedia, or open related DIY guides.
