I hope this isn't too OT for this group but I know all the real experts here (and I feel at home here!!).
I've just bought a second-hand television - a 20-inch Pacific ptv5103 - and the picture is too big for the screen. I've got the back off and the only two adjustments I can see are marked "focus" and "screen". I can't see anything like vertical or horizontal height adjustments. Any hints, please?