It sounded like it might have been booting into audit (dead batteries)...the quick on/off twice is supposed to bypass that but that game might not even have an interlock switch.

When you apply power, what do the LEDs on the CPU board do?

OK, have we verified all power supply voltages are correct as well as test points on CPU?

Remove the driver board from the game. Power up and press the diagnostic button on CPU. What do the LEDs do?

The first thing to do is get the CPU booting reliably. That means at power up the LEDs come on and go out. If one or both remain on the CPU didn't boot properly.

If it did boot properly and is working, pressing the CPU Diag button should result in the LEDs blinking twice then going out.

Until you get the CPU stable, fiddling inside the coin door is wasting time.

I would think 4.82 is HI enough. This diagram depicts the test points and waveforms you should expect to see at different spots on the CPU.

NOTE: this is from the FLASH manual.

SYS3 CPU.jpg

I just suffered through your exact problems on the same game last night. I had a spare driver board and got the MPU to boot, but something was wrong with it. Then I replaced the MPU with another I had. It booted so I switched out the roms and ended up with a working game. I am convinced that these sys3-9 games just need the headers and connectors completely replaced if you want a dependable boardset.

Fix the battery or install a cap so you can repeatably boot without the audit annoyance.

Have you also re-capped the power board? Great Plains Electronics sells a Williams 3 cap kit if you need one.

I'm working on a World Cup restore as well... need replacement decals for the spinner. Don't want to derail this thread so if you can help just PM me. Thx & good luck!

Did you put new ROMs into your game? Are you sure you have the right IC17?? This game uses a special IC17 White 2 ROM. If you have the stock standard white 2 at IC17, the game will not go into attract mode. There are still places still hosting the incorrect IC17 ROM for this game. I just went through this issue and figured it out the hard way... IF anyone needs the ROM, send me a message and I will email it.

Don't take this as me being harsh, just truth.

You are wasting your time trying to trouble shoot faults while having scanbe IC sockets on the MPU board. These IC sockets are the absolute worst of all of them. Maybe even worse then those crappy brown ones on the frist bally generation. If you pry the top off of a scanbe socket, you quickly see why they are terrible.

Plenty and places sell IC sockets. For a System 3-4 MPU/Driver boards could use 40pin IC socket, 24 pin IC socket, and sometimes even the clock generator is in an 16pin scanbe socket.

here are some great plains electronics part numbers
IS-640-TL
IS-624-TL
IS-316-TL

Unless you are well practiced in board repair, I can't recommend you trying to replacing IC sockets on your computer board yourself.

f2 (solenoids) is common to blow when the cpu board is locking up. The software/cpu runs wild and turns on too many solenoids.

Andrew,

I am going to be attempting to run my WC on a Jungle Lord Sys7 board. It's the early version with the DIPs fitted. I understand that it will work with a special WHITE ROM? Is there a document I can reference for anything special I need to do to make this work?

Thanks for any info!

It is pretty easy to run sys 3-6 software on a sys 7 MPU despite what you might read on the internet. I have seen some write ups for doing so get really complicated when it can be done really easily without needing to change jumpers.

IC17 on the system 7 board is typically jumpered for a 2532 ROM. For Green and earlier flipper ROMs on system 7 you need to combine ROM1 and ROM2 into a single 2532 or 2732 EPROM. That combined flipper ROM goes in IC17. The stock normal 2716 game ROM goes in IC14. Then you are using just two EPROMs instead of three.

So the cmd line prompt for combining the Green, yellow, or white flipper roms would look like this.

copy /B GREEN1-IC20.716+GREEN2-IC17.716 GREENCOMBO-IC17.532

Beware the world cup uses a special white 2 ic 17 rom too.

http://mirror2.ipdb.org/files/2810/Williams_1978_World_Cup_Service_Bulletin_dated_28_March_1978_Prototype_versus_Production_ROMS.pdf