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Posted by David on 03/26/07 20:24
Hi -
I tried connected a battery powered external lavaliere mic (Audio
technical ATR-35s) to my Sony DCR-PC9 camcorder via the "plug in
power" mic - in jack. It works great when the camcorder is running
on batteries, but when the camcorder is plugged into the AC adapter
there is a lot of hum. (60 Hz hum, not hiss). Judging from what I"ve
read on other sites, this is a fairly common problem.
I tried various things to deal with the hum. I noticed that if I
grounded the case of the Sony (touching the metal tripod socket to a
water pipe, for example) the hum completed disappeared. I am thinking
of rigging up a wire with an alligator clip so that I have an easy way
of making the connection from the camera housing to something that is
electrically grounded.
Is there any risk of hurting the camcorder by doing this? Should a
resistor or fuse go in series with the grounding wire so that if
something goes wrong the current flow over the grounding wire is
limited?
Thanks in advance for any suggestions.
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