astroids help

I am having a problem with the picture. About the middle of the screen the
objects seem to roll over. ( saucers turn upside down) and continue to the
bottom of the screen. There is nothing on the top of the screen. When you
go to test mode none of the lines appear straight. My question is what to
check next. I went to the monitro first and changed the output transistors
and still no change.

Any help would be appreciated

  Frank

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Received on Sat Jan 11 13:10:21 2003