OK - new set of symptoms.
On power up, nothing happens - no lights come on, no response to switches.
If we momentarily close the coin switch (increments the credits but wrong way - reduces credits), then machine sort of starts up - some lights come on, but the tilt light does not.
Then, if we manually tilt, the tilt light comes on.... THEN we close trough switch (to simulate ball drain) then, and only then, will the game react to the start button (reduces credits, but still doesn't seem to energise any of the playfield switches). Note: when we close the trough switch, the trough solenoid doesn't fire.
So it looks like a problem with the startup sequence....I think?
