The led is mounted on the main board. It is incredibly small and has to be soldering in the correct orientation for polarity (it is a diode). Look for the triangle mark on the old one for to orient the new one (bottom of triangle points towards bottom of circuit board). Sennheiser part number 522462. Buy 2, because they're so small it's easy to lose the first one!
If you haven't done micro soldering before, good luck. Don't bother unsoldering the old led; just flick it off with an exacto.
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=== Update (12/09/2016) ===
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The led is mounted on the main board. It is incredibly small and has to be soldering in the correct orientation for polarity (it is a diode).
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Look for the triangle mark on the old one for to orient the new one (bottom of triangle points towards bottom of circuit board).
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Sennheiser part number 522462. Bottom of triangle on led points towards bottom of circuit board.
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Buy 2, because they're so small it's easy to lose the first one!
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If you haven't done micro soldering before, good luck. Here's some advice:
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Don't bother unsoldering the old led; just flick it off with an exacto.
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Add tiny amount of solder to both tabs on circuit board. Hold new led in place with fingernail whilst soldering one side of led in place. Solder other side. Power on beltpack to verify led lights up (you don't need the display board or the rf board ribbon cables connected to verify light).
The led is mounted on the main board. It is incredibly small and has to be soldering in the correct orientation for polarity (it is a diode). Look for the triangle mark on the old one for to orient the new one (bottom of triangle points towards bottom of circuit board). Sennheiser part number 522462. Buy 2, because they're so small it's easy to lose the first one!
If you haven't done micro soldering before, good luck. Don't bother unsoldering the old led; just flick it off with an exacto.