(Topic ID: 297173)

Demo Man Left slingshot switch not registering

By fuzz

7 days ago


Topic Heartbeat

Topic Stats

  • 13 posts
  • 4 Pinsiders participating
  • Latest reply 6 days ago by YeOldPinPlayer
  • No one calls this topic a favorite

You

Linked Games

Topic Gallery

View topic image gallery

j127 solenoid matrix (resized).jpg
DemoManSwitchMatrix (resized).png

#1 7 days ago

Because of the flipper Column the right sling shot, pop bumpers and ramp switches are not registering in test either.
all of those Solenoids fire when in solenoid test
all wires look connected.
Everything is connected to the power driver board

What would be some possible problems that would prevent the switches from registering?

Thank you in advance

#2 7 days ago

If they aren’t registering, either there is a broken wire, or the MPU has a problem. Are the switch matrix pins in good condition and are all diode/wires attached properly to the switches? Solenoids triggering are caused by switches and if those switches aren’t registering, the solenoid will never get the signal to fire. That’s why you’re able to fire those in test mode. Do you have any photos of the affected switches?

#3 7 days ago
Quoted from fuzz:

What would be some possible problems that would prevent the switches from registering?

Check the switch matrix in the manual. See if they have a common wire. If so go over that wire from the CPU to each switch, check for a broken wire.

LTG : )

#4 7 days ago

ok

Thanks Ill start tracing wires

#5 7 days ago

Would one broken wire or incorrect matrix take out the whole column?

#6 7 days ago
Quoted from fuzz:

Would one broken wire or incorrect matrix take out the whole column?

Per your manual the column 4 wire begins at J207 pin four and is connected to all eight switches in that column of the switch matrix. Assuming your board is performing properly the signal travels from that pin on the board header- to the connector contact - then down the wire and through each one of the switches. If the signal is interrupted at any point none of the switches further down the chain will work.

So check your green-yellow wire for continuity starting at J207-4. Maybe you'll get lucky and it's pulled out right at the board.

DemoManSwitchMatrix (resized).png
#7 7 days ago

so the brown wire would be the common wire through them all
the left slingshot does not register, so that means the rest down the chain will not

would it be safe to say that the left slingshot switch is the problem since it does not allow contuinity to the rest of the chain?

j127 solenoid matrix (resized).jpg
#8 7 days ago
Quoted from fuzz:

would it be safe to say that the left slingshot switch is the problem since it does not allow contuinity to the rest of the chain?

Forget the switch, go after the brown wire. From switch to switch to switch to CPU. A break kills other switches. Especially if two wires go to one lug and one of them broke off.

LTG : )

#9 7 days ago

ok i will

#10 7 days ago

checked every lug
all wires are connected
no breaks in wires either

#11 7 days ago
Quoted from fuzz:

checked every lug
all wires are connected
no breaks in wires either

Grab a meter and check continuity from the farthest switch to the CPU.

LTG : )

#12 6 days ago

Spent a few hours diagnosing and researching last night
watched a few video's as I can fix a lot of the mechanical issues but not that great with boards and Multi meters.
I do know how to check continuity though

Im getting a ping from the 4th pin on j207
Im also getting a ping on the way down the column on the green yellow wire for every switch lug.

Does this mean its most likely the connector from the wires to the board?

#13 6 days ago
Quoted from fuzz:

Does this mean its most likely the connector from the wires to the board?

Not necessarily. Check out this procedure at the Pinwiki to isolate the issue to either the MPU or the playfield wiring: https://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Switch_Matrix_Problems

If you determine the board needs repair (and you don't want to do it yourself) ChrisHibler and Borygard are both excellent choices. There are others on Pinside that do board repair as well, feel free to ask for recommendations.

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside