Hey all,

I've recently purchased my first pin, Dr. Dude, and unfortunately I've run into some issues. Currently:

1) The mixmaster always spins.
2) The ball won't load into the shooter lane.
3) Targets set off things they shouldn't (example: heart of rock and roll sets off the knocker).

This was a 100% working machine before I moved it in my house, but I guess something got messed up during the transfer.

I've been going through the machine and reading online, and when going through the switch test I get the error "A/C Relay C-Side 06 02." (see screenshot). I am fairly certain it is a wiring issues as I have removed the j8 and j10 connectors (iirc) to determine if the board was at fault.

Also, I found a section on this site http://www.pinwiki.com/wiki/index.php?title=Williams_System_9_-_11 which suggested checking fuses under the section 4.6 Solenoid problems. They all looked ok.

I got confused when looking through the manual at the switch matrix section. Does anyone have an ideas where I can look or what I can test?

When I get home from work I can provide a video of the behavior if it helps. Thanks in advance and sorry if this is all basic newbie stuff.

20140929_182948.jpg

EDIT:

_{Post edited by Applesaucesomer: Insert a video}

Thanks for the reply! I wasn't really clear in the original post but I did bust out the DMM to check those fuses. There was actually a separate issue I had with the score display that was easily corrected by swapping out a fuse, so I instantly thought to check the ones in that guide I posted. No luck tho .

I think the switches in the ramp are good too because when I did the switch edge test it shows both of them working fine. I'll check out the buttons on the coin door too but I am not sure... I think it might be a problem with the circuit with all the green wires (J8? I forget off the top of my head).

When I get home from work today I suppose I'll upload a video showing off what's going on since it will probably help.

For the first switch test (06) I get the message in the screenshot and can't proceed forward after that. Should I be doing the switch edge test instead? Or the Solenoid test?

Thanks for the tips guys. I posted a youtube video showing off the issues in more detail. I'll update the topic when I get a chance to tinker more: girlfriend was getting angry I was postponing a date to take the video (bonus points if you spot her!).

Derp, girlfriend rush etc.etc. Should be good to go now.

Welp just got around to doing some testing and I found no errors doing the switch edge test... any other ideas guys? I'm almost ready to admit defeat and hire someone.

Roger. Thanks for all the help terryb!

After fiddling around with the machine and reading the manual some more, I think I might have sussed out what the issue is. I think the problem is actually the A/C Relay being stuck in "C" mode: I should have known from the error the one switch test was giving me. I tried manually triggering the A/C relay by attaching an alligator clip to the Q8 transistor and had no luck. I then tested the transistors on the CPU board as described here: http://techniek.flipperwinkel.nl/wms11/index1.html .

On Q6 (the transistor which powers the motor) I got a buzz, which I think means it is shorted. Q8 didn't seem shorted (which controls the A/C relay), but it looks like I am in the realm of board repair territory. Being a newbie I'm wary about messing with the board since everything I've read online says that spells disaster.

Time to call in the big guns or is there something else I can do?