Samsung Galaxy A80 USB board replacement - repair guide

Your Galaxy A80 doesn't load properly or does not recognize the SIM card.

  • Galaxy A80
  • 11 Steps
  • Difficult
  • 60 min.
Go to the guide

Charging socket, SIM card holder and microphone – Replacing the USB board of your Samsung Galaxy A80 can solve many problems.

Your partner at the end of the line no longer understands you and your phone no longer recognises your SIM card or your charging cable? By replacing the USB board on your Samsung Galaxy A80 you can restore these functions.

On the small circuit board, which is located in the lower part of the device, are many small components and thereby different functions located. These components cannot be replaced individually, as they are soldered directly onto the USB board. Nevertheless, with this detailed manual you can replace the board and repair these functions of your Galaxy A80.

If questions arise during the repair process, you can always contact our technicians or the iDoc community. Simply use the chat or comment function. Do you have feedback for us? We'd love to hear your review.

Good luck with the repair!

Required tools

  • Flat Picks

    Flat Picks

    You need a very flat tool such as a flat pick to pry out parts that are glued in place.

    €2.00 at the iDoc store
  • Heat gun

    Heat gun

    You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.

    from €14.47 on Amazon
  • For storing screws

    For storing screws

    We recommend storing your screws so you don’t mix up the various screws and small parts.

    €10.00 at the iDoc store
  • iFlex opening tool

    iFlex opening tool

    Taking apart the little pieces in your smartphone can be a big pain. The iFlex is tough but compact with a blade thickness of just 0.15 mm so it fits into even the smallest spaces, like the gap between the display and frame or under the logic board. The iFlex is made of stainless steel and designed for a good grip, making this convenient tool the perfect assistant for every smartphone repair.

    €10.00 at the iDoc store
  • iPlastix

    iPlastix

    Taking apart the little pieces in your smartphone can be a big pain. The iPlastix is tough but thin with a blade thickness of just 0.15 mm, so it fits into even the smallest spaces, like the gap between the display and frame or under the logic board. The iPlastix is made of durable plastic and designed for a good grip, making this convenient tool the perfect assistant for every smartphone repair.

    €10.00 at the iDoc store
  • SIM Tool

    SIM Tool

    If you want to use a different SIM card or repair most parts of your Apple devices, you’ll have to remove the SIM card first. The SIM card tray only comes out if you insert a tool with a very fine point into the small hole next to the SIM card slot. This tool is designed especially for ejecting the SIM card from all iPhones and iPads, and fits perfectly into the appropriate opening.

    €2.00 at the iDoc store
  • Plastic prying tool

    Plastic prying tool

    You need a flat plastic prying tool to disconnect the various plugs and connectors.

    €2.00 at the iDoc store
  • Suction cup

    Suction cup

    A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels.

    €2.00 at the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €13.00 at the iDoc store
Show all replacement parts for the Galaxy A80 

Replacement parts and tools for this repair

Our tools plus the right spare part help you fix your device easily.

for €59.00

Getting started with the repair of your Galaxy A80

If you get stuck or have questions, you can post a comment. We’d be happy to help.

11 steps
  1. Remove the back cover

    The first step is to loosen the heavily glued backcover. To loosen the back cover, the edge of the unit should be heated with hot air. A temperature of about 60 to 80 degrees is recommended. It should still be possible to touch the device with bare fingers without it being too hot.

    1. When the adhesive is heated, place a suction cup at the bottom of the back cover. Slowly pull on the suction cup while pushing your opening tool such as the iFlex or iPlastix into the gap that is opening between the backcover and the frame.
    2. You can also use an iSclack to help lift the back cover a little. The iSclack has suction cups on two sides to pull the display and back cover evenly.

    The iFlex is made of thin yet stable metal and is therefore easier to insert into the narrow gap. However, it is also easier to scratch the back glass or the frame of the device with this tool.The iPlastix is made of plastic, slightly more flexible than the iFlex and therefore a little more difficult to insert into the gap. The iFlex can be used initially to get into the gap at first. After that, you can continue working with the plastic tool.

    1. Once the tool is inserted, slide it along the edge of the frame. Then gradually place a flat plectrum into the already detached part. This will prevent the glue from rejoining at these points.
    At the left edge of the back cover you should be careful not to insert your tool too far into the device. There is a flex cable running along, which could otherwise be easily damaged. In the upper part of the back cover you should be careful not to scratch along the camera module. The backcover is very heavily glued in this area.

    The back cover is made of glass and can therefore break easily. Take enough time for this step and work carefully. Also warm up the frame from time to time. It can take 30 minutes to loosen such a strongly glued backcover.

  2. Remove the main board cover

    Galaxy A80 - Remove the main board cover 01
    Galaxy A80 - Remove the main board cover 02
    Galaxy A80 - Remove the main board cover 03
    Galaxy A80 - Remove the main board cover 04
    Galaxy A80 - Remove the main board cover 05
    • 6 × 3,3 mm Phillips

    The NFC antenna is also located on the cover of the main board.

    1. To remove the main board cover, the camera must first be extended.
    2. Start your camera app and set the mode to front camera mode.
    3. When the camera module is completely extended, you can remove the six Phillips screws of equal length.

    The camera will automatically slide down again after some time, so you should start unscrewing the screws directly after moving the camera out.

    1. Then use a plastic spudger to slightly lift the cover in several places and take it out.
  3. Disconnect the battery

    Galaxy A80 - Disconnect the battery 01
    Galaxy A80 - Disconnect the battery 02
    • Battery Connector
    1. Next, the battery contact is disconnected. This prevents any further power from circulating in the device and prevents short-circuits during the repair.

    Make sure that the camera module is still extended when you disconnect the battery contact. This will keep the camera in this position for the rest of the repair.

    1. Separate the connector with a plastic spudger. Always lever from the side where there are no small components on the board to avoid damaging anything.
  4. Remove the speaker

    • 7 × 3,9 mm Phillips
    • Connector
    1. Loosen the seven Phillips screws of the same length that hold the speaker in place.
    2. Then lever the slightly glued component out of the unit.

    Now the connectors of the wide flex cable connecting the main board with the USB board are exposed.

    1. Loosen the connectors with a plastic tool and take the cable out.
  5. Remove the USB board

    • 1 × 2,9 mm Phillips
    • Antenna Connector
    • Fingerprint Connector
    1. Remove the single screw that secures the USB board.
    2. Then disconnect the connector of the fingerprint sensor.
    3. Disconnect the connectors of the two antenna cables. Use a pair of tweezers to slide under the connector and loosen the contact with a slight turning movement.
    4. Finally remove the SIM card holder from the device.
    5. Now the lower circuit board can be removed from the device. Bend the cables a little bit to the side to not get stuck with the board.
  6. The right tools for your repair

    With the right tools, you will succeed in any repair. In our store you will find a large selection of professional quality tools.
    VIEW NOW
  7. Insert the USB board

    Galaxy A80 - Insert the USB board 01
    Galaxy A80 - Insert the USB board 02
    Galaxy A80 - Insert the USB board 03
    Galaxy A80 - Insert the USB board 04
    Galaxy A80 - Insert the USB board 05
    Galaxy A80 - Insert the USB board 06
    Galaxy A80 - Insert the USB board 07
    • 1 × 2,9 mm Phillips
    • Connector
    • Antenna Connector
    1. Place the lower board back in its position in the device. Be careful not to pinch any cables underneath.
    2. Then put the SIM card holder back in place. If it is stuck, do not push it in with force, but check if the board is already in place.
    3. Then reconnect the connector of the fingerprint sensor.
    4. Position the connectors of the antenna cables over their sockets and press them down with a spudger until they snap into place.
    5. Lead the white cable into the clamp on the board.
    6. Then fasten the single screw.
  8. Insert the speaker

    Galaxy A80 - Insert the speaker 01
    Galaxy A80 - Insert the speaker 02
    Galaxy A80 - Insert the speaker 03
    Galaxy A80 - Insert the speaker 04
    • Connector
    • 7 × 3,9 mm Phillips
    1. Put the wide flex cable back into the device and connect it to the main board and the USB board.
    2. Place the speaker back in the device, press it down slightly and screw it in.
  9. Connect the battery

    Galaxy A80 - Connect the battery 01
    Galaxy A80 - Connect the battery 02
    • Battery Connector
    1. Now connect the battery to the mainboard.
  10. Insert the main board cover

    Galaxy A80 - Insert the main board cover 01
    Galaxy A80 - Insert the main board cover 02
    Galaxy A80 - Insert the main board cover 03
    Galaxy A80 - Insert the main board cover 04
    • 6 × 3,3 mm Phillips
    1. Place the cover of the main board on the right side and then press it into position.
    2. Make sure that the small plastic noses on both sides snaps back into place.
    3. Then you can fasten the cover.
  11. Test your Galaxy A80

    Galaxy A80 - Test your Galaxy A80 01
    Galaxy A80 - Test your Galaxy A80 02
    Galaxy A80 - Test your Galaxy A80 03
    Galaxy A80 - Test your Galaxy A80 04
    Galaxy A80 - Test your Galaxy A80 05
    1. Before you completely close your Samsung Galaxy A80 again and reglue the back cover, you should test if everything works.
    2. Start the phone and open the phone app.
    3. Enter *#0*# in the number field and the Samsung test menu will open.
    4. Here you can test the display for touch and display errors.
    5. You can also test all other functions, such as the speaker, vibration motor, etc.
    6. If everything works as expected, you can close the device.
  12. Attach the back cover

    1. Remove all remaining adhesive from the inside of the back cover and from the frame of the device. You can scrape off the remains with a plastic tool, like a spudger. You can also use rubbing alcohol such as isopropanol and a lint-free cloth. You should remove all adhesive residue so that the device can be closed properly.
    2. Take the new adhesive frame and check the correct alignment. You can orient yourself on different recesses and screw holes.
    3. Pull off the first transparent protective film and place the adhesive on the frame so that it sits correctly and does not protrude anywhere.
    4. Then remove the green protective foil. If the glue comes off the frame in some places, press it back into position with a spudger.
    5. Then put on the back cover and press it down.
    6. You can heat the edge of the device again with the heat gun and weigh it down with a few books to make the adhesive bond even better.
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