(Topic ID: 259633)

SMB Right Upper Kicker Issue


By loren3233

9 days ago



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  • 13 posts
  • 3 Pinsiders participating
  • Latest reply 7 hours ago by pinmike
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#1 9 days ago

Hello,

I am looking for some direction on an issue I am having on a Mario Brothers. The right upkicker will not kick the ball out when the switch is activated. I will not have access to the pin until tomorrow morning to continue to investigate.

Things I have checked:
1. Switch was adjusted to be able to hear the switch "click" when depressed
2. Coil fires in test
3. Switch does NOT activate during a switch test
4. I switched the right upkicker switch (not working) with the left upkicker eject switch (working) to the right side and it would not register when depressed. Both switches work correctly on the left upkicker hole.
5. I did check the diode on the coil just in case and it was fine.

I am leaning towards a wiring issue with the right upkicker switch since it does not register. The wire connections on the switch look fine when removed and put back.

Things I plan to check when I return tomorrow:
1. Reset switch connector at the board
2. Check continuity from board connector to the right upkicker switch.

I am writing to ask if I am missing something obvious or if I should prepare to check more on my to do list when I return to the pin tomorrow. Any direction would be helpful.

Thank you,
Loren

#2 9 days ago

Your on the right track if both switches do not work then yes it’s a wiring,connector,or the male header pins on the board.

#3 9 days ago

All other switches do work in switch test, including the left upkicker eject switch. The only switch I am having an issue with is the right upkicker.
I will update tomorrow after doing some checking tomorrow morning. Didn't think of checking the header pins so I will check those at the board as well.
Thank you

#4 9 days ago

Sooooo,
I went in this morning and it worked for 2 games after turning the game on then stopped working. Went into switch test and it started to work again in switch test, I then started a game and it would not work.
I reset all connectors at the board and it worked for 2 games the stopped working. I went ahead and pulled the board and reflowed the solder at the switch connector pins and it worked for a game then stopped working yet again.

I am completely stumped on this, obviously intermittent issue. Any ideas on where do go from here?

#5 8 days ago

Did you check the back of that board for continuity on the traces for those male header pins to that connector?

#6 8 days ago

I did not, all I did was reflow the solder. I did check continuity from the switch to the connector and all was good there.

I will do that today and report back. Thank you as I am completely stumped on this issue.

#7 8 days ago
Quoted from loren3233:

I did not, all I did was reflow the solder. I did check continuity from the switch to the connector and all was good there.
I will do that today and report back. Thank you as I am completely stumped on this issue.

Yes it is puzzling but tracking it down is near and it’s pointing to a bad trace or a faulty/flaky wire from that switch to the connector.After so many years of lifting and lowering the playfield wiring sometimes get pinched between playfield and backbox starts making wires flaky.

#8 8 days ago

Try going into switch test, activating the switch and then wiggling the wires at the connector or header. There could be an internal break or corrosion on the wire at the connector and contact is hit or miss with vibration. If you can follow the wires check that they were not pinched or cut along the way by someone folding the head down or lowering a playfield. If you could post a few pictures maybe someone will notice something. Good luck.

#9 7 days ago

Hey pinmike, I pulled the board and it buzzed out fine from the header pins through the traces on the backside of the board.

I guess the next step would be to look at the wiring even though those wires had continuity from the switch to the connector.

latenite I will try wiggling the wires when I get the board back into the game, which will probably be tomorrow.

I will keep you both posted and if anything else comes to mind feel free to let me know.

Thank you for the direction to this point and hoping I can post back soon with the cause.

#10 7 days ago
Quoted from loren3233:

Hey pinmike, I pulled the board and it buzzed out fine from the header pins through the traces on the backside of the board.
I guess the next step would be to look at the wiring even though those wires had continuity from the switch to the connector.
latenite I will try wiggling the wires when I get the board back into the game, which will probably be tomorrow.
I will keep you both posted and if anything else comes to mind feel free to let me know.
Thank you for the direction to this point and hoping I can post back soon with the cause.

Ok,It’s narrowed down to the wire for that switch,Yes try and wiggle it and see if it is flaky.Also on that connector for that switch look into that connector and see if that wire is completely naked meaning that there is not a small piece of cover wire in the way.The male header pin on the board has to make full contact with that wire and nothing in the way

#11 5 days ago

I had to go back to the firehouse for work so the earliest I can get back to the game will be early next week. I will keep you both posted on results.

#12 22 hours ago

Ok, after doing some wire chasing I was able to resolve the issue.
It was a simple fix by resetting 2 connectors on the diode board.
As posted earlier I had previously reset all the connectors that I was aware of (in the backbox).
I followed the wires from the switch that was having the issue and it led me directly to a diode board which is attached on the bottom side of the playfield (which I was unaware of and did not check earlier). After the resetting of the 2 connectors on the diode board all is working prooerly.
Thank you for the assistance and direction.

0122201305 (resized).jpg
#13 7 hours ago

Hmmm,Very interesting and very good hunt tracking down that wire.Have fun!! SMB is a very fun pin

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