Got the same in my Stargate and I think it is an original brand works...
One time I got playfield lights ghosting so I unplug every playfield connector clean them and scratch them with sand paper and works well now...
You also might shunt all ground white wires upper left of the transformator as it preconized on pinrepair.com
I did it and never have any transistor burning on A3 driver board after that.
Have fun
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