I took components off piece meal and wondered about the current limit pin, so I took it off and then put a resistor across and then ended up connecting it cirectly to V-, but with no luck.
I am using 2 PP3 batteries connected to give a dual supply, just for testing, so my supply was -11V and +7V. They tend to run down quick but I keep an eye on them. I've tried a range of signal input voltages. I also tried connecting it to a mains powered supply, that was +25 and -25V, I was getting -30V and +20V on the supply pins. No luck.
The load on the opamp was the transformer primary which is 4ohms. I didn't connect anything to the secondary just tested it with a scope.
I've now taken the chip off the board I had made up in Eagle and have spent the last hour putting it on a stripboard. I haven't quite finished so haven't tested it yet. I wish I hadn't made the stripboard quite so messy I've confused myself already, however I will double check it before testing. This should give me a better idea of what is wrong.
Thanks,
Ant.
Added after 1 minutes:
I should add IC3 is the transformer.