I was thinking that there could be a cold solder joint somewhere because it reacted to the heat. So I did reflow the joints at IC13 and IC2 and around. And it worked! That's kind of stupid really but it did. Might be helpful for someone in the future...
Anyways thanks again for your help guys!
PS. Doug is appearing always out of the thin air if someone needs the chips lol. Good to have you! - And don't worry - I have checked your website in the beginning of this thread - just in case!