Partial success - I used 2 push buttons and got the thing to light - the "red" works if I put the semaphore up to green (vertical) and then push the red button it drops and shows the red light, but the green won't go back up. Now I'm used to cleaning the solenoids on the reverse loop relay, there's maybe one in this semaphore, you have to polish the moving parts (plunger) with a ribbon of typing paper (NOT anything abrasive) but I've tried to disassemble this previously, when you get all 4 screws out the guts don't drop, I didn't monkey around much so as not to disturb the linkage - anybody know how to take this apart?
Thanks Tom
