Thanks! I will try the S Video as a solution. Thanks for the information about the probable cause of the problem.

You are right, it does say that? I noticed it is under the heading optional digital tuner, not sure if that means anything. I also noticed that the 7-40 is listed as having a 200/240 refresh rate while the 7-55 only has a 100/120 refresh rate?

Thanks for the suggestion! We are in the US so no scart but I have changed the cables we use and the problem is still there.

Is this a first? LOL A question that nobody has an answer for? None of the experts here have an answer?

??

Sorry, I left that out of first post. I did try the sat box from our BV 7-55 with the Avant and the problem was still there so it does seem to be the Avant. I suppose another couple of tests I could try is connecting a DVD player and seeing if problem is still there and perhaps connecting the sat box with S Video cable instead of the component cables

Our Avant has developed a problem with the picture. Periodically waves of black, or actually just darker colors pass through the picture top to bottom. Here is the weird part. If I set the satellite box to output a 4x3 image, such that there are black bars on the side of the picture the problem disappears. Problem only exists with a 16x9 setting so

We do have two pairs of Beolab 4000s, red and yellow. I have considered 4000s for the rear but the layout of our room is such that walking into the the room the back of one of the Beolab 4000s would be visible.

[quote user="9 LEE"] Try them on 'SPEAKER 4' and hear the difference. [/quote] Thanks! Am looking forward to trying that.

I took a look at the service manual here on Beoworld and it does look completely possible, although time consuming.