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CAT S48c Motherboard Replacement

Introduction

This is a guide for replacing the motherboard of the CAT S48c. You can find a replacement part on Ebay: OEM SPRINT CATERPILLAR CAT S48C 16GB LOGIC BOARD MOTHERBOARD.

Water may leak into your CAT S48c and fully damage your motherboard without you knowing. If the CAT S48c isn't powering on or experiencing hardware issues like not charging, screen flicker, or not powering on, this guide will show you step through step on how to replace it.

Common symptoms are:

  • Overheating
  • Frequent reboots
  • Not turning on
  • Screen malfunctions
  • Charging issues

A charging port does come with the motherboard, and if you're not adept to soldering, a motherboard replacement may be the only option for you.

What you need

  1. CAT S48c Motherboard Replacement, Battery: step 1, image 1 of 2 CAT S48c Motherboard Replacement, Battery: step 1, image 2 of 2

    • Remove the ten T5 Torx 4 mm-long screws on the sides of the case.

    Edit

  2. CAT S48c Motherboard Replacement: step 2, image 1 of 2 CAT S48c Motherboard Replacement: step 2, image 2 of 2

    • Open the side covers and remove the SIM card with tweezers or a pick.

    • If there is an SD card remove that as well.

    Edit

  3. CAT S48c Motherboard Replacement: step 3, image 1 of 3 CAT S48c Motherboard Replacement: step 3, image 2 of 3 CAT S48c Motherboard Replacement: step 3, image 3 of 3

    • Use an opening pick to pry off the rear cover.

    Edit

  4. CAT S48c Motherboard Replacement: step 4, image 1 of 3 CAT S48c Motherboard Replacement: step 4, image 2 of 3 CAT S48c Motherboard Replacement: step 4, image 3 of 3

    • Remove the five 3 mm-long Phillips #000 screws that secure the lower midframe.

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  6. CAT S48c Motherboard Replacement: step 5, image 1 of 2 CAT S48c Motherboard Replacement: step 5, image 2 of 2

    • Use the tip of a spudger to pry up and disconnect the battery press connector.

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  7. CAT S48c Motherboard Replacement: step 6, image 1 of 3 CAT S48c Motherboard Replacement: step 6, image 2 of 3 CAT S48c Motherboard Replacement: step 6, image 3 of 3

    • Remove the five 3 mm-long Phillips #000 screws from the top section of the midframe.

    • Gently pry the section along with the battery off of the case.

    Edit

  8. CAT S48c Motherboard Replacement: step 7, image 1 of 2 CAT S48c Motherboard Replacement: step 7, image 2 of 2

    • Gently pry the battery from the case, making sure not to bend the battery.

    • Replace the battery with your replacement, popping it in the frame and insert the flex cable.

    • Keep in mind that if it has lumps or damages it could be dangerous to handle as it can catch on fire.

    Edit

  9. CAT S48c Motherboard Replacement, Power Button: step 8, image 1 of 1

    • Once the battery has been removed look for the bright orange power button on the side of your phone.

    Edit

  10. CAT S48c Motherboard Replacement: step 9, image 1 of 2 CAT S48c Motherboard Replacement: step 9, image 2 of 2

    • You can test the button on the motherboard itself to see if it's the motherboard and not the button, if so you may need to replace the motherboard.

    • Use tweezers to remove the button.

    • Once the button is taken out replace it with your new button. You may notice rubber-like holders on the sides, make sure they line up with the frame.

    Edit

  11. CAT S48c Motherboard Replacement, Motherboard: step 10, image 1 of 2 CAT S48c Motherboard Replacement, Motherboard: step 10, image 2 of 2

    • Detach the headphone jack press connector at the top of the motherboard with tweezers, an opening pick, or your finger tips.

    Edit

  12. CAT S48c Motherboard Replacement: step 11, image 1 of 2 CAT S48c Motherboard Replacement: step 11, image 2 of 2

    • Detach the display press connector the top-right of the motherboard with tweezers, a pick, or your fingertips.

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  13. CAT S48c Motherboard Replacement: step 12, image 1 of 3 CAT S48c Motherboard Replacement: step 12, image 2 of 3 CAT S48c Motherboard Replacement: step 12, image 3 of 3

    • The charging port will be somewhat lodged into the frame to keep in tact, move it up and pop it out to remove the motherboard.

    Edit
Conclusion

To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Repair didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.

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