Hey guys. I need a little help trying to bring a Williams Phoenix back to life.
When you turn it on it will randomly lock on a couple of coils and go into audit mode or it won't boot at all. There are no shorted solenoid driver transistors.
I have taken the boards out of the game and tested them with Leon's Test Rom. They seem to work fine. The flipper relay clicks on and off with the led's on the CPU board. When I press the test button the top LED lights then goes out, the bottom LED lights then goes out and then they both flash before it goes back to flashing both LEDs and actuating the relay.
If I leave the test rom in U17 and then fit U20 and U14 EPROMs it will still perform the test properly. However when I put the flipper EPROM in U17 and perform the test, the bottom LED stays on.
I've burnt another set of roms but it is doing exactly the same.
Any ideas ?