Williams World Cup (1978) restoration

[FirePower]

and pm me your email address  - I've got scans of some of the plastics.

[ddstoys]

Hey george look what i found 

[infinite1977]

Ok, I got my powerboard and all the fuses. I am going to place it in and see what happens. I just need to work our what gets plugged into what. If I have any troubles I will yell out. Any advice before I blow shit up???

[ddstoys]

Dont plug the cpu or driver board in just the main power supply then measure it with a multi meter  follow the pin repair guide and you will be fine 

http://www.pinrepair.com/sys37/index1.htm#fuses

[infinite1977]

Hmm there is a problem with the "j2 " connection, it doesnt seem to click in onto the powerboard, also I am missing the cables that go across the top of the back box into the power board, so there will be no power testing tonight. I will contact the guy I got it off to see if he has those power cables, other wise I will need to source them from somewhere.

P>S Daniel/Dave, I will be posting that into out tomorrow, sorry just got really busy.

Cheers

[ddstoys]

No worries let me know if you find them cable i might have one here 

[infinite1977]

Hey guys pardon the stupid question but in regards to my above post, is the cable missing Wms System 3-7 Logic Power Cable?

[infinite1977]

P.S anyone know where I can get a Williams decal for the coin door? I cant seem to find any anywhere just a Bally one

[ddstoys]

Ive never seen a williams Decal on the front door they usually have an aliminium plate with a red w on them in the center coin slot space

[blue95]

It looks like the W is screen printed onto the plate, you could geta red vinyl copy cut out to look the same

[FirePower]

Have you got the wiring diagrams and schematics?

The ones from http://www.firepowerpinball.com/  particularly the backbox wiring will help for interconnections and voltage levels and identifying harnesses.  I think I recall reading the GI wiring is run differently or fused in a different way on sys3 games, even though the power supply board is the same.

You should be able to do a fair bit of testing even without J2 as it is just the solenoid and lamp ground. The lamp supplies just passes through the power supply board via nothing other than fuse F3 and the solenoid supply  has a few soothing caps, a protection varistor and is fused by F2 on the power supply board.

[infinite1977]

OK, worked out issue with J2 connector. The female plug on the power board has some solder stuck in it, so I was able to remove it. Quite lucky, as I have never used a soldering iron and had a friend leave one here as he was sick of always bringing it over when ever I needed any wiring done.

so Now I have the power board ready to go and fused up, what exactly do I do to make sure it works. I have tried reading the pinrepair guide, but I just dont understand the terminology. I need someone to dumb it down for me. It is just a matter of running a mm onto it or something. If anyone can give me an idea of where to start that would be good.

I do no have any other boards on as yet so there should be no issue of damaging anything.

Cheers.

P.S cleaned up the inside of the back box a little as there were some old burn marks with the help of a friend. It is coming up ok. Will post some pics, and I also got my hands on some displays, just need one more cabe as I was one short. does anyone have one they are willing to part with? Need the one to go from the little display to the master. (Hope that makes sense.)

Cheers

[ddstoys]

Ill try dumb it down for you.

Only plug in the two Square plugs between the fuses and the big blue thing then turn the machine on

With a multi meter measure

To test +12 volts set multi meter to DC and on 3J6 pin 6 (Red lead) use pin 11 to 15 of J6 for your ground (black wire)  Between 10 - 14v should be seen

To test +5 volts with DC and on 3J6 pins 7 to 10 still using J6 pins 11 to 15 for your black lead 4.9 - 5.2v should be seen

[ddstoys]

NOW FOR THE HIGH VOLTAGE SECTION

Does your multi meter have auto Range or do you have to set it to voltages?????

If you do have to set it make sure its set to the 100v range

now put the black lead on J5 pin 1 which is ground and put the red lead on J5 pin 3 hopefully its shows between 90 -110 volts if it does it working if it doesnt the board need work


Hope this helps  do be carefull when testing dont short any pins with the multi meter   

[infinite1977]

Thanks for that. I will try it out over the weekend. Your a legend