[NLRS] TV pulsing noise

[Brent Casavant]

Hello,

I picked up a shortwave receiver at Hamfest Minnesota this weekend,
and got around to playing with it today.  It seems to work well, and
would probalby be much more enjoyable if my French weren't so rusty.

However I ran into an EMI problem.  I noticed a strong regular pulsing
noise at about 4 Hz, which I can best describe as sounding a bit like a
rapid "ticking" white noise.  It seems to be strongest when I tune
in the vicinity of 9MHz, though I hear it from the 6MHz band up through
about the 13MHz band (I'm not sure if there's more accepted terminology
for shortwave bands).

Intrigued, I moved around the house with the receiver, and finally
ended up with an incredibly strong "signal" near my TV.  Sure
enough, unplugging the TV immediately removed the noise.  It
does not matter whether the TV is on or off, the noise remains as
long as it is plugged in.

I realize HF questions are rare around here, but I'm hoping someone out
there has run into this type of noise before.  In particular I'm hoping
that someone knows what sort of component may be causing this noise, and
a way to eliminate it (which I imagine involves opening up the TV and
firing up the soldering iron).  Not so much because I'm an active
shortwave listening, but I figure when I do start working HF (and
maybe when using HF IF frequencies for driving transverters) this will
become a real problem.

Any thoughts are most appreciated.

Thanks,
Brent Casavant

-- 
Brent Casavant			http://www.angeltread.org/
KD5EMB				-.- -.. ..... . -- -...
44 54'24"N 93 03'21"W 907FASL	EN34lv