(Topic ID: 312395)

Pinbot - won't start game, or kickout from any hole

By dr_spidey

4 months ago


Topic Heartbeat

Topic Stats

  • 20 posts
  • 6 Pinsiders participating
  • Latest reply 4 months ago by PinRetail
  • No one calls this topic a favorite

You

Linked Games

#1 4 months ago

So I recently picked up this Pinbot. It was working fine.

I decided to do a full topside teardown. ramps and visor have been removed. The mechs are all still attached. I then decided I may as well do a full playfield swap.

So I decided to just check everything one last time before I go any further.

When I power up the machine, and press start, the game resets but the ball never kicks out. Ball won't kick out of either of the eye holes or the third kickout. Pop bumbers work fine. ramp up and down seems to be working. slings work.

Coils test fine and work in test mode
all the switches test ok

Any thoughts?

Thanks
rob

#2 4 months ago

Dumb question, but you have enough balls in the machine?

#3 4 months ago

Yeah. Two

#4 4 months ago

When I hit start everything resets as if a game is about to start. Score goes to zero. Drop targets reset. Ramp resets.

Just never kicks the ball out.

#5 4 months ago

Have you run switch test?

My guess is there is a switch that is not sensing a ball in it.

#6 4 months ago

Yeah. I checked those.
Trough switches are working fine in test mode

#7 4 months ago

I’m now thinking it might be an issue with switch 19. I did rebuild that switch.
It’s in the same column as the trough switches

Problem now is my meter is not working so I’ll need a new one.

What’s the difference between switch edges and levels in test mode?

#8 4 months ago
Quoted from dr_spidey:

What’s the difference between switch edges and levels in test mode?

Edges shows the switch you just closed. Levels show all the switches the game thinks are currently closed.

#9 4 months ago

Before you bother messing with switches you need to do a coil test and see if the ball release coil works.

You said you tested just want to make sure

#10 4 months ago
Quoted from CrazyLevi:

Before you bother messing with switches you need to do a coil test and see if the ball release coil works.
You said you tested just want to make sure

Make sense, but there are numerous coils not kicking out balls. So doubt they’re all out. Sounds not like a switch issue on the matrix

#11 4 months ago

Coil test works

I need a new multimeter (mine just died) to test further

But I did start a game. Then I just manually took the balls and placed in one eye hole. And it did eject the second ball.

I’m pretty sure something is up with switch 19. Or maybe a switch in that column

#12 4 months ago
Quoted from dr_spidey:

When I hit start everything resets as if a game is about to start. Score goes to zero. Drop targets reset. Ramp resets.

Just never kicks the ball out.

I am looking at the Pin Bot game initialization code. So, if you start a game with the ramp up and both balls in the trough, the ramp is lowered but the ball does not eject into the shooter lane? If this is correct, my next question is whether the ball search thread has been started. Can you please start a game with the ramp up, wait until the ramp lowers, and then manually remove one of the balls from the trough? Please let me know if the ball search kicks in 20s later.

#13 4 months ago

idealjoker correct. So I started a game with ramp up. It immediately lowers ramp. Nothing happens. No ball eject. If I manually eject a ball then after twenty seconds sometimes the search starts. But not always. I just tested like 6 times. Once the eyes ejected. Once the ball trough ejected. The rest nothing happened.

#14 4 months ago

What do you get in switch levels test with the balls out/and the balls in the trough?

Drops up and depending on state of ramp you should get nothing showing. Both balls in trough should show only the trough switches.

Switch edges can be helpful too, as you activate switches (use ball not finger) you should listen for more than one switch activating.

Make sure the trough switches aren't reversed (right as left and vice versa)

#15 4 months ago

I did multiple combinations of switch testing and everything checks out ok. Ramp up and down. Drops up and down.

Weird thing is if manually start the game, when the ball drains it ejects into trough but bonus doesn’t collect.

If i open the visor. Then load a ball in one of the eyes it will eject ball two.

Then when balls drain the bonus collects and generally ejects the ball. But not always.

#16 4 months ago
Quoted from dr_spidey:

So I started a game with ramp up. It immediately lowers ramp. Nothing happens. No ball eject. If I manually eject a ball then after twenty seconds sometimes the search starts. But not always.

The fact that the same test does not give the same result every time makes diagnostics difficult. However, based on your information *sometimes* the ball search thread is started even though both balls are in the trough. This can only happen if there is a problem with one or more of the switches (or in the switch wiring, or the switch drivers). Here's what I'd do:

1) Remove both balls, reset the drop targets, ramp and visor to the point where no switch is closed.
2) With switch test running I would gently hit the playfield in various places with my fist to see whether any of the switches is set too tightly.
3) Go through every single switch and close it, verifying that only that one switch is triggered when I do that.

There's another test that you can do: Start a game with the ramp up, one ball in the trough and the other in the shooter lane. The ramp must stay up in this case. If it drops, you have a bad switch. If the ramp stays up, momentarily remove the ball from the shooter lane and put it back. The ramp should drop as soon as the shooter-lane switch closes again.

Finally, if you have problems with the visor switches, this can also prevent a ball from being ejected. However, if that's the case, the ball search thread is not started.

#17 4 months ago

I can't get back tinkering for a couple days.

But I will try this and see if i can at least get some reproducible results. My thought is there has to be a loose wire/connector somewhere.

But it also seems like the game is not always able to figure out where the balls are, so it is doing some strange things

#18 4 months ago

It sure sounds like you have some weird switch issues.

Did you tear down/service the game with the power on? Perhaps you shorted the switch matrix and fried a chip.

#19 4 months ago

Problem solved

One of the switches to the visor wasn't put back properly and wasn't registering.

Thanks for all the help
First play field swap coming up in the next few weeks!
Any words of advice - besides take lots of pictures

#20 4 months ago
Quoted from dr_spidey:

Problem solved
Any words of advice - besides take lots of pictures

A fair amount of pinball service is just not giving up.

You'll get to the point where you've exhausted all the rational possibilities and you've put a lot of time into the problem and you are not getting the problem fixed.

In pinball repair, that is when you need to double down, and work harder.

Congratulations! You had a very challenging problem, and you fixed it!

Good job!

Promoted items from the Pinside Marketplace
From: $ 18.00
Apparel - Men
Pinside Shop
$ 39.99
Eproms
Matt's Basement Arcade
$ 175.00
Lighting - Interactive
Professor Pinball
$ 54.99
Cabinet - Shooter Rods
Lighted Pinball Mods
$ 17.00
3,250 (OBO)
Sale Pending! Machine - For Sale
Clarks Summit, PA
From: $ 1.00
Playfield - Other
Rocket City Pinball
$ 19.99
Eproms
Matt's Basement Arcade
From: $ 1.25
Playfield - Other
Rocket City Pinball
$ 49.99
Cabinet - Shooter Rods
Pinball Shark
$ 54.99
Cabinet - Shooter Rods
Lighted Pinball Mods

Reply

Wanna join the discussion? Please sign in to reply to this topic.

Hey there! Welcome to Pinside!

Donate to Pinside

Great to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, become a Pinside+ member!