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The sub PCBA on the BLU studio 5.5 holds the charging port and connects to both the speaker and motherboard assembly so it holds a major role in many functionalities that you seek in your mobile device. This guide will demonstrate step by step how to remove and replace this crucial component.

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  1. Blu Studio 5.5 Sub PCBA Replacement, Battery: step 1, image 1 of 3 Blu Studio 5.5 Sub PCBA Replacement, Battery: step 1, image 2 of 3 Blu Studio 5.5 Sub PCBA Replacement, Battery: step 1, image 3 of 3
    • Locate the notch to remove the back panel at the lower left corner of the panel.

    • Insert the plastic opening tool or a fingernail into the notch.

    • Apply force upwards until back panel becomes loosened.

  2. Blu Studio 5.5 Sub PCBA Replacement: step 2, image 1 of 2 Blu Studio 5.5 Sub PCBA Replacement: step 2, image 2 of 2
    • Remove the loosened back panel and set aside.

    • Locate the notch to remove the battery.

  3. Blu Studio 5.5 Sub PCBA Replacement: step 3, image 1 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 3, image 2 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 3, image 3 of 3
    • Insert a plastic opening tool or your fingernail into the notch and apply force upwards until the battery is loosened.

    • Remove the battery and set aside.

  4. Blu Studio 5.5 Sub PCBA Replacement, Back Panel Assembly: step 4, image 1 of 2 Blu Studio 5.5 Sub PCBA Replacement, Back Panel Assembly: step 4, image 2 of 2
    • Locate all twelve screws along the back panel:

    • Seven 5mm screws.

    • Five 3.5mm screws.

    • Using a Phillips #000 screwdriver, remove all twelve screws.

  5. Blu Studio 5.5 Sub PCBA Replacement: step 5, image 1 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 5, image 2 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 5, image 3 of 3
    • Now that all the screws have been removed, use a plastic opening tool to carefully pry at each of the corners until loosened.

    • Be extra careful when prying open as it may damage or snap the thin sides of the panel.

    • Place the plastic opening tool inside the loosened panel and gently push upwards and move along the phone to remove the back panel.

    • Remove the panel as if you were turning the page of a book.

  6. Blu Studio 5.5 Sub PCBA Replacement, Sub PCBA: step 6, image 1 of 2 Blu Studio 5.5 Sub PCBA Replacement, Sub PCBA: step 6, image 2 of 2
    • Locate the screw holding down the sub PCBA.

    • Remove the screw using the Phillips #000 screwdriver.

  7. Blu Studio 5.5 Sub PCBA Replacement: step 7, image 1 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 7, image 2 of 3 Blu Studio 5.5 Sub PCBA Replacement: step 7, image 3 of 3
    • Locate the gold plated cable connecting the sub PCBA to the motherboard.

    • Locate the flex cable connector just above the sub PCBA screw.

    • Using tweezers, detach both cables from the sub PCBA.

  8. Blu Studio 5.5 Sub PCBA Replacement: step 8, image 1 of 2 Blu Studio 5.5 Sub PCBA Replacement: step 8, image 2 of 2
    • Note the red and blue wires connecting the sub PCBA to the speakers.

    • Either the speaker will need to be loosened and removed alongside the sub PCBA or the wires disconnected and resoldered during reassembly.

    • Using tweezers, grab the PCBA and remove gently from assembly.

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

Alec Coleman

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USF Tampa, Team S1-G6, Nance Spring 2017 crwdns2886886:0USF Tampa, Team S1-G6, Nance Spring 2017crwdne2886886:0

USFT-NANCE-S17S1G6

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