Update - it is now worse 

Owen - I checked that diode on what was the main culprit - it tested fine.
I checked the wiring - it is all as it is meant to be.

SO I went to Marvin 3 guide - it advised to remove and re-seat the short flat strap between the 2 boards - I did that, and now........

Well now I have the original issue AND I also have EVERY light in coloumn 1 lighting up with its corresponding 'row' light from column 8.

Theres bloody lights on everywhere  .......................


As a side issue I did find that ONE of the diodes on a seperate lampholder is reading value when tested both sides ( is that 'open' ? )
BUT that particular lamp is in column 8 - it was not part of the original row 2 issue- but now that column 8 has come into play , then it is now involved - confused now everyone

Sheeeeeeeeeeesh - I am lost