Tablet · Amazon · Kindle Fire HD 8 12th Gen
Amazon Kindle Fire HD 8 12th Gen Logic Board Repair
Logic Board Repair guide for the Amazon Kindle Fire HD 8 12th Gen
Before you begin
Tools
- Plastic opening pick
- Spudger
- Phillips #00 screwdriver
- Tweezers
- Fine-tip soldering iron
- Desoldering braid
- SIM eject tool
- Anti-static wrist strap
Parts / materials
- Rosin flux
- 90%+ Isopropyl alcohol
- Cotton swabs
- Solder wire
Safety
- Wear safety glasses while soldering to protect eyes from flux spatter.
- Work in a well-ventilated space to avoid breathing in soldering fumes.
- Wear an ESD wrist strap to prevent electrostatic damage to delicate microchips.
- Ensure the battery is disconnected before applying heat tools to the board.
Overview
Step-by-step
- 1
Remove the microSD card tray
1 minInsert a SIM eject tool or thin pin into the hole on the side tray to eject the microSD card holder.
- 2
Pry open the rear cover seam
2 minInsert a thin plastic opening pick into the seam between the display glass and the plastic back cover.
- 3
Unclip the back cover
3 minSlide the plastic opening pick along all four edges to disengage the internal retaining clips.
- 4
Lift away the back cover
1 minSeparate the plastic back cover from the main chassis and set it aside.
- 5
Disconnect the battery cable
2 minUse a spudger to pry the battery connector straight up off its motherboard socket.
- 6
Disconnect the display flex cable
2 minFlip up the black locking lever on the display ZIF connector and slide the ribbon cable out.
- 7
Disconnect the digitizer flex cable
2 minUnlock the digitizer ZIF connector latch and carefully pull the touchscreen ribbon cable free.
- 8
Unplug the camera module
2 minUse tweezers to lift the camera flex connector straight up from the top edge of the board.
- 9
Disconnect the speaker harness
2 minGently unplug the dual speaker cable harness from its socket on the logic board.
- 10
Disconnect the side button cable
2 minUse a spudger to flip open the ZIF clip securing the power and volume button flex cable.
- 11
Remove logic board screws
3 minUnscrew the Phillips #00 screws securing the logic board assembly to the plastic mid-frame.
- 12
Lift out the logic board
2 minGrasp the logic board by its edges and lift it out of the tablet chassis.
- 13
Apply flux to board pads
2 minApply a small drop of liquid flux over cold solder joints or damaged micro-components.
- 14
Reflow damaged solder joints
5 minTouch the micro-soldering iron tip to affected solder pads to reflow joints or clear bridges.
- 15
Clean the board with alcohol
3 minScrub the soldering area gently with a cotton swab dipped in isopropyl alcohol to remove leftover flux.
- 16
Reinstall the logic board
2 minCarefully align and seat the repaired logic board back into the device housing.
- 17
Fasten motherboard screws
3 minReinstall and tighten all Phillips #00 screws to hold the board firmly in place.
- 18
Reconnect display and battery cables
4 minReinsert all ribbon cables into their ZIF connectors and press the battery plug into its socket.
- 19
Snap the rear cover on
2 minPosition the back cover over the tablet and press firmly around the perimeter until all clips snap shut.
After your Amazon Kindle Fire HD 8 12th Gen logic board repair
Power the Kindle Fire HD 8 12th Gen 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 Amazon Kindle Fire HD 8 12th Gen job before assuming the part is defective. Keep leftover adhesive and screws labeled in case you need a second pass.
Keep learning
Explore more Amazon Kindle Fire HD 8 12th Gen repair context in the encyclopedia, or open related DIY guides.
