Do you mind if I ask how you came by the 'scope. My 803B was an ebay score, which I got for next to nothing. I was pretty chuffed to get it working. I have another Metrix awaiting a donor analog board. It is an OX 2000, one of the top of the range models, but they seem to be pretty rare beasts, so I think I may have to wait a long time to get the parts to fix it. I like these older scopes, they may be a little on the large side, but they have some advantages over digital ones. Besides they are also repairable, which a lot of the modern scopes simply aren't.