LG Vu CU920 Microphone Replacement
crwdns2959932:0crwdnd2959932:0Gregory Daviscrwdnd2959932:0crwdnd2959932:0crwdnd2959932:02crwdnd2959932:0crwdne2959932:0
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crwdns2959928:0crwdne2959928:0 ↓This guide will show you how to disassemble the LG Vu CU920 to replace a broken microphone. You will need to keep track of small screws, remove small components from the motherboard, and solder/unsolder a component
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Remove the back cover by firmly pressing against the indent on the back panel. Slide the cover downward and off the phone.
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Remove the battery by placing your fingernail or an opening tool at the bottom edge of the battery and lift it out.
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Remove the two 3.5 mm screws above the battery port with a Phillips #00 screwdriver.
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Pull out the antenna to reveal a third screw.
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Remove the 3.5 mm screw with a Phillips #00 screwdriver.
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Using a plastic opening tool, gently pop up the plastic tab.
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Use the plastic opening tool to pry up the edges of the plastic casing. You will then be able to slide it around the edge to dislodge it.
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Remove the plastic case to reveal the motherboard.
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Use a spudger to disconnect the cables from the motherboard.
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Gently lift the ZIF connector (black tab) holding the ribbon cable in place. When it is in the upright position, remove the cable from the back side.
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Remove the jack attached to the red and blue wires by carefully pulling it upward from the motherboard.
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Remove the round jack connected to the black cabel by carefully prying it up from beneath with a spudger or plastic opening tool.
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Remove the remaining three ribbon cables by gently lifting them by the ends, opposite of the cables, with a plastic opening tool or spudger until they pop out.
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Remove the motherboard by gently prying it up with a spudger from the charging port.
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Once the board has been lifted, remove it by pulling it away from the connected edge.
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Unsolder the microphone located at the top right corner of the motherboard near the silver jack.
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Solder in a replacement microphone.
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To reassemble your device, follow these instructions in reverse order.
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Cal Poly, Team 8-57, Johann Spring 2013 crwdns2935289:0Cal Poly, Team 8-57, Johann Spring 2013crwdne2935289:0
CPSU-JOHANN-S13S8G57
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The microphone is located on a flex cable with the lower and side keys. The component shown is the external antenna connector, hence the location next to the internal antenna connector. Source: I work in cell phone repairs, soldering, and electrical circuitry.
Michael Benesch - crwdns2934203:0crwdne2934203:0 crwdns2950251:0crwdne2950251:0
