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Microphone Boom Replacement


Replacing a faulty microphone boom.

Models Covered:

A100T (all cord sets)
A100 (all cord sets)

Tools Required:

3/32 Hex head wrench
Fine Point Soldering Iron
Tweezers (or similar)


The microphone boom can fail with an internal short or broken wire. Symptoms of a bad microphone boom include intermittent or no transmissions (no one else can hear you when you speak). Often, the microphone boom will be sensitive to movement and will cut out or regain ability when moved.

The microphone boom is a one piece unit and must be replaced as a whole, there is no way to repair in part of the microphone boom without destroying it.


Please read and understand all instructions before beginning repair.

1. Using the 3/32 Hex head wrench, remove the three screws holding the cover on. Do not remove the cover.


2. While holding down on both the microphone boom and cord set near the housing, pull upwards on the cover. The cover should lift off with very little effort. Holding down on the microphone and cord will keep those components in the main part of the housing.

3. Desolder the microphone wires from the board. Simply melt the solder with your soldering iron and use a pair of tweezers to pull the wires up and away from the board.

4. The microphone should be soldered to the board with the wire color matching the pads in the image below.

3. Using the tweezers to hold the wire, solder the silver tip of the microphone wires to the corresponding pad. Be careful no to create a solder bridge between the solder pad and the board.

5. Position the microphone boom in the slot. The top of the boom should be at least 1/4" (6mm) inside the housing. The boom should be positioned with the 'TALK' side facing directly down towards the table (this will properly align the 'TALK' side with your mouth when you are using the headset). The 'TALK' side can be found by removing the microphone windsock.

5. Check that all of the wires are clear of the pinch points between the main housing and the cover.

6. Place the cover back down on the main housing. When the cover is down flush with the main housing, the cord strain relief, microphone boom, and switch will hold it in place. Replace the screws and start each one, but do not tighten any yet. You may have to wiggle the cover a little to get the screws to thread properly. Once all three screws are started properly, tighten them until snug. Be careful, the housing is aluminum and can strip out if too much pressure is applied.