On 10 Jun 2006 05:01:39 -0700, "radio10"
put finger to keyboard and composed:

Is there
definitely not even the slightest herringbone interference on the picture ?

..yes, there's a narrow horizontal noise bar slowly wandering up and
down the picture.

Looks like mains ripple. I'd check the main filter capacitor on the
primary side of the switching transformer. It would have to be pretty
bad, though, for ripple to make it across to the secondary side.

- Franc Zabkar
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