Tremulus Lune problem

[robbiemcm]

I'm having a problem with a Tremulus Lune I built, I built it on a PCB and it worked fine for about a week. It stopped working on a car trip over to my friends house and I haven't been able to figure out what the problem is. I've tried using an audio probe on it and can trace the signal all the way to the LDR, it seems to be fine all the way to the first leg. However, after the signal goes through the LDR it is not present on the other side. So unless I misunderstand the circuit, the signal is being completely lost over the LDR. Does it sound like my LDR might be broken? I haven't tried reheating the joints, but I suspect a bad joint would result in the problem going away and coming back if I wiggle the LDR, or is that completely wrong? I measured the voltages on the ICs and there seemed to be one at 0V (ground connection), 8V(battery connection) and the rest were around 3V and 5V and fluctuating.

Sorry I can't type up a full problem report like the sticky says, I'm in a bit of a rush today. If someone suspects it might not be an easy solution, I'll do something more in depth when I get the chance.