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If a malfunctioning WiFi module is suspected in an HP 250 G3, it can be detected through the Windows Device Manager tool. In the event that the WiFi module is indeed determined to no longer be operating correctly, the card should be replaced, and this guide demonstrates how to do so. This process is relatively lengthy, but no special technical skills are required to complete this repair.

  1. Remove the battery.
    • Remove the battery.

  2. Remove the two indicated screws using a #1 Phillips driver.
    • Remove the two indicated screws using a #1 Phillips driver.

  3. Use a #1 Philips driver to remove the disc drive's screw. Using a spudger, gently pry the drive out of the housing. Using a spudger, gently pry the drive out of the housing.
    • Use a #1 Philips driver to remove the disc drive's screw.

    • Using a spudger, gently pry the drive out of the housing.

  4. Remove the rubber rests on the rear of the device, which are close to the battery. Remove the hidden screws placed under the rests using a #1 Philips driver. Remove the hidden screws placed under the rests using a #1 Philips driver.
    • Remove the rubber rests on the rear of the device, which are close to the battery.

    • Remove the hidden screws placed under the rests using a #1 Philips driver.

  5. Remove the remaining screws on the bottom of the device. Remove the remaining screws on the bottom of the device. Remove the remaining screws on the bottom of the device.
    • Remove the remaining screws on the bottom of the device.

    • Remove the two little screws at the DVD entrance.

  6. Turn the laptop around. Open up the laptop (to remove the keyboard). Use a spudger or iSesamo to remove the keyboard.
    • Turn the laptop around.

    • Open up the laptop (to remove the keyboard).

    • Use a spudger or iSesamo to remove the keyboard.

    • Slide the iSesamo around the upper side of the keyboard as shown in the pictures (you will hear clicks).

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  8. When it becomes loose, gently slide the keyboard to the left as shown in the third picture. Be gentle as the thin ribbon can easily tear. Be gentle as the thin ribbon can easily tear.
    • When it becomes loose, gently slide the keyboard to the left as shown in the third picture.

    • Be gentle as the thin ribbon can easily tear.

  9. Gently lift the keyboard up. Spot the thin ribbon cable attached to the connector (the connector has a plastic lid). Carefully open the lid with a spudger and slide the ribbon cable out of the connector.
    • Gently lift the keyboard up.

    • Spot the thin ribbon cable attached to the connector (the connector has a plastic lid).

    • Carefully open the lid with a spudger and slide the ribbon cable out of the connector.

    • Be very gently with the cable and the connector as the lid may come loose.

    • Close the lid after removing the cable so that the cable cannot fall out.

  10. Remove the screw circled in the second picture. Remove the tape over the cable and the connector. Remove the white ribbon cable from the connector.
    • Remove the screw circled in the second picture.

    • Remove the tape over the cable and the connector.

    • Remove the white ribbon cable from the connector.

    • Open up the lid with a spudger, and gently remove the ribbon cable.

    • Use caution, as the ribbon cable is pasted to the plate.

    • This ribbon cable is the connector from the ON/OFF switch.

  11. Remove the circled screw. Remove the ribbon cable from the connector.
    • Remove the circled screw.

    • Remove the ribbon cable from the connector.

    • The ribbon cable/connector is the touch pad/mouse connector.

  12. Remove the screw on the upper side of the laptop.
    • Remove the screw on the upper side of the laptop.

    • Remove the last screw (unfortunately, I do not have a picture of this, but you will see it on your laptop).

  13. Slide your iSesamo around the case as shown in picture 1 and 2, and go around the entire laptop. You will hear clicks after using the iSesamo. Lift the upper plate to reveal the motherboard.
    • Slide your iSesamo around the case as shown in picture 1 and 2, and go around the entire laptop.

    • You will hear clicks after using the iSesamo.

    • Lift the upper plate to reveal the motherboard.

  14. Remove the two screws holding the main board to the plate (see pictures two and three). Remove the two screws holding the main board to the plate (see pictures two and three). Remove the two screws holding the main board to the plate (see pictures two and three).
    • Remove the two screws holding the main board to the plate (see pictures two and three).

  15. Use an IC extractor to remove the audio connector from the socket.
    • Use an IC extractor to remove the audio connector from the socket.

  16. Use a spudger to remove the tape/sticker. Be very gentle as the connector is a hard-to-remove ribbon cable with several small cables. Ripping one of them will damage the ribbon cable, and will thereby damage the screen. It is recommended to use an IC extractor to remove the LCD connector  (however, you can use two small flathead screwdrivers or tweezers to slide the connector out of the socket).
    • Use a spudger to remove the tape/sticker.

    • Be very gentle as the connector is a hard-to-remove ribbon cable with several small cables. Ripping one of them will damage the ribbon cable, and will thereby damage the screen.

    • It is recommended to use an IC extractor to remove the LCD connector (however, you can use two small flathead screwdrivers or tweezers to slide the connector out of the socket).

  17. Remove the two screws holding the HDD. Slide out the HDD.
    • Remove the two screws holding the HDD.

    • Slide out the HDD.

  18. Use a spudger to loosen the cable from the bottom plate. The flat ribbon cable is pasted to the bottom plate, and the ribbon cable is soldered to the PCB. The flat ribbon cable is pasted to the bottom plate, and the ribbon cable is soldered to the PCB.
    • Use a spudger to loosen the cable from the bottom plate.

    • The flat ribbon cable is pasted to the bottom plate, and the ribbon cable is soldered to the PCB.

  19. Remove the golden antenna cable from the socket. Be very careful, and use a spudger. Remove the screw. The WiFi module will jump up when the screw is removed. Slide the WiFi module out.
    • Remove the golden antenna cable from the socket. Be very careful, and use a spudger.

    • Remove the screw.

    • The WiFi module will jump up when the screw is removed. Slide the WiFi module out.

    • Wear gloves to avoid touching the antenna or the antenna sockets.

    • To install the new Wifi module, slide the new WiFi module in, push it down, and drive the screw back in.

    • Reattach the antenna.

  20. In this case I did not remove the main PCB because I would have had to remove the DC jack. It is a very breakable connector, and the wires are very thin. If they are broken the laptop will no longer charge. If the DC jack is damaged or broken in your laptop, remove the hinge instead (this is holding the DC power jack in place). If the DC jack is damaged or broken in your laptop, remove the hinge instead (this is holding the DC power jack in place).
    • In this case I did not remove the main PCB because I would have had to remove the DC jack. It is a very breakable connector, and the wires are very thin. If they are broken the laptop will no longer charge.

    • If the DC jack is damaged or broken in your laptop, remove the hinge instead (this is holding the DC power jack in place).

Sonuç

To reassemble your device, follow these instructions in reverse order.

8 farklı kişi bu kılavuzu tamamladı.

Kevin D

Üyelik tarihi: 02-05-2014

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