ok sorting one of the electronic problems in this game,
The lift motor run as soon as the game is turned on in game over mode,
And its only supposed to run once a game is Started.
Not much in the circuit, Transistor on driver board,and an opto isolator IC driving a Triac on the power switching/Aux driver board (lower left in first Pic)
Tested Driver board side works ok,
That leaves the Triac and the Almost unobtanium MOC3030 IC.
After furthur testing it turned out to be the Ic,so found some in EU that would post here reasonably. had to buy 10 so got plenty of spares now
Also changed Triac for good measure an equivalent to the original is a fairly common part
Also notice the large transistor on the board,
this is the upgraded MJ10005 20A one that fires the Hypercannon. Early games only had a 10A prone to failure..
Pics
And a youtube link of lift motors first test
