Maybe the romchips are not correctly in their sockets on the mpu board?
Pulled and reseated all rom chips on the MPU board, still same result. Thank you though.
[FONT=verdana,arial,helv,helvetica][SIZE=-1]Repeating flashes (like the game wants to boot and reboot, continuously) can be a few things. A bad 6810 RAM at U7, or a bad socket / broken trace at U7. Look for a [/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]bad socket / broken trace[/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1] at U11 PIA especially near pins 35 to 40. L[/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]ook for corroded traces or bad chip sockets in [/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]the typical "battery corrosion zone"[/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]since U7 and U11 are in [/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]this area[/SIZE][/FONT][FONT=verdana,arial,helv,helvetica][SIZE=-1]. If there is still no seventh (and final) flash, the last thing to check is U14, after the 7th flash, the MPU enables the IRQ line. If the IRQ line is broken, the MPU will restart the boot sequence over and over. Also look at resistor R134 (4.7k), if this is bad it will cause the board to repeat the boot sequence.
If you have a way to test this on the bench, it'll make your life easier.
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I have not had a chance to do this yet, but it is on my list of things to do, thank you.
I did have time to at least run test point checks, here's the results:
Transformer Top/Back Lugs:
Trans 13 / should be 7.8 Vac / reads 7 Vac
Trans 14 / should be 7.8 Vac / reads 7.4 Vac
Trans 15 / should be 12 Vac / reads 11.8 Vac
Trans 16 / should be 12 Vac / reads 11.4 Vac
Trans 17 / should be 7.3 Vac / reads 6.4 Vac
Trans 18 / should be 7.3 Vac / reads 0 Vac
Transformer Top/Front Lugs:
Trans 2 / should be 49 Vac / reads 49.2 Vac
Trans 6 / should be 49 Vac / reads 49.1 Vac
Trans 8 / should be 180 Vac / reads 185.5 Vac
Trans 10 / should be 180 Vac / reads 184.2 Vac
Transformer Bottom/Front Lugs:
Trans 1 / should be 120 Vac / reads 0.6 Vac
Trans 9 / should be 180 Vac / reads 1.3 Vac
Rectifier PS Board:
TP1 / should be +5.4 vdc / reads +2.93 vdc
TP2 / should be + 230 vdc / reads +214 vdc
TP3 / should be +12-14 vdc / reads +13.54 vdc
TP4 / should be +5.7-7.3 AC / reads +6.2 AC
TP5 / should be +43 vdc / reads +43.8 vdc
AS-2518-35 MPU Board:
TP1 / should be +4.9-5.2 vdc / reads +5.18 vdc
TP2 / should be +12-14 vdc / reads +13.75 vdc
TP3 / should be +21.5 vdc / reads +21.8 vdc
TP5 / should be +4.9-5.2 vdc / reads +5.20 vdc
Solenoid Driver Board:
TP1 / should be +4.9-5.2 vdc / reads +5.25 vdc
TP2 / should be +190 vdc / reads +158.5 vdc
TP3 / should be +4.9-5.2 / reads +5.2 vdc
TP4 / should be +230 vdc / reads +238 vdc
TP5 / should be +12-16.5 vdc / reads +13.57 vdc
Lamp Driver Board:
TP1 / should be +4.9-5.2 vdc / reads +4.57 vdc