Herringbone on TV

[Dick Smyth]

I have a large screen Sony TV connected to a satellite receiver. One TV

output goes to the VCR and the VCR audio output goes to a small stereo
system. It has worked fine until recently. A slight herringbone pattern
develops when the stereo system is turned on, whether watching a tape or
watching live TV through the VCR.. It vanishes if you turn off the stereo.
There is no problem if you watch the satellite directly, i.e.. not through
the VCR.
I suspect a loose or dirty connection or possibly a bad ground. Before I go
grovelling about the maze of wires on the floor behind the whole set up, am
I on the right track? Or maybe there's something else I haven't considered.
Thanks
ds

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[Art]

Suggest disconnecting everything and connect your DSS directly to the tele
via AVIO rather than via RF. Check the quality of the received signals.
check multiple stations. Then connect the audio from the DSS or the Tele to
the Stereo. Again check the quality of the received signals. Determine which
item is introducing the interference. Connecting the satellite via the
direct video inputs reduce the probability of generating interference while
producing the RF output in the satellite receiver then demodulating them
again in the tele.