Did you remove fuses and check them or did you check them in game?

When you say you changed the power supply, which board did you swap out?

Do you get any blinking on the A8 display controller board when you turn the machine on?

Did you ever turn the game on with the display controller not connected?

viperrwk

Test for voltages and see what you have to J1 and from J2 on power supply board in the back box. Leaving connectors plugged in, test in the back of the connectors.
J1 pins 1,4,5 = 12 volts in.
J1 pins 2,3,6 = ground.
J2 pins 1-8 = +5 volts.
Also, from pinrepair:
Gottlieb Alpha-Numeric Latched Driver Problems. This information is regarding the 20 digit alpha numeric Gottlieb display MA-1361. It uses a Fluorescent latched driver at U9 (TI5812N or UCN5812F or A6812). This chip is obsolete and difficult to find. Failure mode is a blank display of both 20 digit tubes, and F5 fuse at transformer module A12 (1/4 amp) is blown.
If you try to play the game it most likely will have strange behavior and even reset during play. Display board U9 may be hot to the touch. This is even with F5 blown. The reason for this is U9 is a dual voltage part. With F5 blown the 47vdc is not present, but the +5 volts is. The common failure mode of this device is a short internally between pin 1 (Vbb) and pin 14 (Ground). This creates excessive current draw to the four diode bridge CR1-CR4 on the display board.
The reason this problem plays havoc with the game is this. With this chip shorted internally, the +5 can be affected and draw more current. This is why the chip can be very warm to the touch. Since the power supply is not self-adjusting, the +5vdc will drop, depending on the amount of current through U9 to ground, causing CPU resets due to low 5 volts. This happens especially during a power increase from coils operating.

My advise, send this hunk of junk back to the owner in return for a full refund! Send the CJ as well.

In addition to the 5v you need to check the other voltages on the A8 controller board. I don't think they are any different for an AN than a DMD since I believe the A8 board is interchangeable between both. For a DMD on P2 it's +62v on pin 5, -100v on pin 8, -112v on pin 7, +5 on pin 1 and +12 on pin 4. If any of these are out and the voltages/fuses on the transformer panel are good, you either have a bad bridge, bad zener or some combination of both on the A8 board.

Also, no blink on the board makes one suspect the U8 GAL. But all of this is from DMD schematics. Someone with an AN version would have to confirm this.

viperrwk

My bad - apologies - thinking DMD.

If the board works completely in CJ and your 5V is good in 1812, and you changed the cables, I'd double check the voltages and fuses coming from the transformer panel.

viperrwk