Thank you all for the well considered replys.  @Macdrone - I'm at a loss where to send my boards in Australia.  I've looked!  @Elfen - When and if the logic b. is done, I'll be sure to have the card inspected too.  You're right about the age - both logic and video card are stamped 1989 - 25 years!  @Trs-80 - I have a lovely collection of as new apple monitors and 3 different brands of Mac - VGA connectors.  I took your advice and the 'Multiple Scan 17' monitor (M2494) and still no video output through the card.  In a few days I'll try the next best monitor I have 'Macintosh 12-inch RGB' (M1296) as it's a fail-safe resolution.