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- > Hi everybody,
-
- Ho there Doug,
-
- > If anyone is still plagued with the double-vbl problem on their Falcon/VGA, then
- > here's a permanent cure for it:
-
- Cool.
-
- > Look for the 3 black inductors just below the monitor port on the Falcon PCB. The
- > two leftmost inductors are the horizontal & vertical sync lines. The third is the
- > composite video signal. Remove the two on the left and replace them with a couple
- > of 75ohm resistors.
-
- You don't have the U numbers for those guys, or are they hard to miss?
-
- > After making this modification, the double-vbl problem will disappear.
-
- That's great! I might do it one day... :-)
-
- > The problem itself is simply (weak) echos on the vertical sync line bouncing
- > between the monitor and Falcon, sometimes setting off an extra vertical blank. The
- > load resistors eliminate the echos and allow the Falcon to stay in sync with the
- > monitor.
-
- Sounds like it as I tried one of those external screen expanders and the problem
- went away! :-)
-
- It does also work if you remove the ground between the monitor and falcon... but
- the picture wont look very nice at all. ;-)
-
- //Magnus Kollberg
-
-