[CQ-Contest] CM500 Headset mic element replacement
k6ll.dave at gmail.com
Fri Jan 16 10:47:54 EST 2015
The microphone in my Yamaha CM500 Headset has failed. DC
measurements at the plug show:
tip and ring shorted
1270 ohms tip to shell with negative ohmmeter lead on shell
810 ohms tip to shell with positive ohmmeter lead on shell
The above measurements lead me to believe that the problem is not
at the connector end, but rather in the element. I'd like to take
a crack at repairing the unit. Mouser has a wide selection of
electret elements, starting at $0.58.
Any ideas as to how would I go about disassembling the mic
enclosure, and can someone recommend a specific electret element?
Thanks in advance.
Dave Hachadorian, K6LL
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