First verify all the fuses are correct value and good, then verify all operating voltages are correct.

I would also suggest unplugging everything from the power supply except for the main plugs from the transformer and testing all of the voltages to make sure the power rails are good. Do both DC and AC measurements on the rails. The AC measurements will give you an indication how the capacitors are doing...the higher the AC voltage, the more ripple you have and the caps are starting to go.

The fact you are indicating that it came on and then essentially goes dead makes me think that something is causing the 5V rail to drop low enough to keep the game in reset.

Brett

Also when checking the fuses, check the fuse clips DE used a poor quality clip and a lot of them break. So make sure to check continuity on the lugs, not just the fuse. Also check you ps connectors, real weak spot there too. Great game, love mine

Is there a way to identify the suspect fuse holders by markings, a la the infamous "Scanbe" sockets on old Williams pins?

Not really, I just noticed on mine when I popped out the fuse, it came out way to easy and there was very little spring left in it to hold the fuse in place, some of the ears actually had cracks in them. GPE sells these very reasonably
if your doing that, you should also re pin Connector CN8 on the power supply. There are fuse's on the PS and Driver board, and up above the big cap next to the driver board. If it worked before , I can see it being either a fuse holder of a bad connector easily, probably got a bumpy ride!! If I remember right, I had and issue when I folded the head that it stretched one connector to the point of separation, might check that too. good luck

Well......the audio board seems to boot fine since there is a "Phantom o/t Opera" call. So, there is +5V, +12V and -12V. The +5V can be at the low side causing the CPU board not to boot.

What are the LED's at the CPU board telling you? +5V and Blanking LED's should be lit.

Is there acid damage at the CPU board caused by leaking batteries?

Maybe there is a "open the coin door" message at the displays but there is something wrong with the High Voltage to the displays. Are the -100V and +100V voltages there? What happens if you open and close the coindoor, goes the machine into attract mode?

Check the power supply for leaking capacitors......the 100uF and 330uF capacitors, especially when the dark brown ones are there are famous for leaking. The 100uF causing the +5V not to be there, the 330uF sometimes causing to short the -12V and high voltage traces and thus frying your soundboard.

Good luck!

Marco

Left: Blanking, Middle: +5V, Right: PIA

PIA LED should be off, sometimes it blinks a few times -> Error message. A few error messages are described in the manual. If it lights immediately after powering on it is probably failing to boot... Examine the battery holder area in this case.

Good luck!

Marco

oh oh...... Very nice your game is alive again. No magic there at your flippers, Phantom o/t Opera is one of/or the first machine from Data East with electronically controlled flippers. The circuitboard (TYFASI) board of that system is inside the cabinet, mounted at the left side panel.

Have fun with your game, she is beautiful!

Marco