Thank you very much for your kindness, Suicidal Orange!
I have taken a multimeter to the keyboard, and can identify the rows. The rows are also much easier to identify.
These keys don't work: Down Arrow, Spacebar, V, G, T, 5 and F4. I marked them out using bright orange marker pen, although it looks brown on the black background.
It looks like a column that is messed up to me, although I can't really identify what the columns are.
The right lower leads on every switch is the row, and the left upper lead is the column. But I tried testing for continuity for the columns on different columns, but didn't get anywhere. I'm not really good at reading PCBs so I'm not quite sure what I am looking at!
Hope someone more knowledgeable can help!