Thanks to everyone for the amazingly fast responses and advice, will try to salvage the old board or get a replacement.
Think it's likely that I'll be able to fix this with some careful resoldering or am I probably looking at needing to replace components as well?
Using the other chassis and...
Recently purchased a working Tekken 4 cabinet, which played fine until the green video gave out completely.
Took apart assembly and examined the neckboard and found it to be fried, looks like a overheating problem (same as here: http://forums.arcade-museum.com/showthread.php?p=1081298). The...