B&Q Everflourish EMT757 Timer Schematic Notes

I was considering modifying this timer to accept a control signal from an external source to override the relay, switching it on.  I concluded this was too fiddly due to the power supply not being isolated.

The schematic is recorded here in case anyone else finds it useful in their experiments or fault finding. 

https://drive.google.com/file/d/0B43XXiSt0MIdem9TcjBDNUNhcnM/edit?usp=sharing