(Topic ID: 212534)

WOZ monkey can't grab the ball

By Pinbear

3 years ago



Topic Stats

  • 9 posts
  • 5 Pinsiders participating
  • Latest reply 8 months ago by pinballinreno
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#1 3 years ago

My new WOZ can't grab the ball (like 90%). I only saw twice successful grab and move the ball to the castle.

In the test, the monkey's movement looks fine.

Does anyone have any idea?

Thanks,
Pinbear

#2 3 years ago

Does it drop the ball or just not grab it at all

#3 3 years ago

Others have suggested to put tape on the magnet of the monkey. This is if the monkey was dropping the ball and not making it up to the castle with the ball. Search the forum and you can find the thread.

#4 3 years ago
Quoted from Georgeh:

Does it drop the ball or just not grab it at all

It does not grab it at all. The magnet of top playfield release the ball then I see the magnet of monkey turned on and tried to grab the ball but it couldn’t.

Do I need to adjust the horizontal level of the pinball?

#5 3 years ago

I feel the monkey didn’t go to the very bottom, so it can’t grab the ball.

2 years later
#6 8 months ago

Sorry to resurrect an old post but have similar problem and have tried every suggestion I know of from various threads. Monkey recently stopped picking up the ball 100% of the time. It gets real close to the ball but just won't ever pick it up anymore.

Things I've tried.

1. Wiping old grease and re-lubricating the mechanism to make sure monkey can travel smoothly.

2. Putting game in test mode and making sure the playfield magnet activates and grabs the ball as it travels over the playfield. It does.

3. Coil test mode and the coil/magnet does work that actually is supposed to pick the ball up.

4. Making sure the up and down switches test as working as the monkey is in test mode. Monkey does appear to slide as close to possible to near playfield magnet. I know sometimes the down microswitch needs to be bent and readjusted. Tried doing that slightly just in case but seems like that's working fine.

5. Made sure the magnet board sense screws were tight and hadn't worked loose over time. Maybe slightly loose but very little if at all.

6. Tried flipping the magnet sense board but that made it worse. Monkey would only travel halfway down and then go back to castle. Tried flipping board back. Then tried moving the board per threads that sometimes the Magnet Sense Switch needs to be relocated and through trial and area can find a way if works well. This would seem weird sense I've had the game 6 or 7 years and generally the monkey almost always picked up the ball. Anyway, couldn't get this to make it work.

7 After several hours and reading threads on this issue and trying suggestions, in desperation I tried replacing the Magnet Sense Switch and then later the coil with the magnet that is what actually picks up the ball. Nothing!!

Out of ideas and have spent countless hours and not sure of anything else to try. Suggestions, please?

#7 8 months ago
Quoted from WesleyCowan:

Sorry to resurrect an old post but have similar problem and have tried every suggestion I know of from various threads. Monkey recently stopped picking up the ball 100% of the time. It gets real close to the ball but just won't ever pick it up anymore.
Things I've tried.
1. Wiping old grease and re-lubricating the mechanism to make sure monkey can travel smoothly.
2. Putting game in test mode and making sure the playfield magnet activates and grabs the ball as it travels over the playfield. It does.
3. Coil test mode and the coil/magnet does work that actually is supposed to pick the ball up.
4. Making sure the up and down switches test as working as the monkey is in test mode. Monkey does appear to slide as close to possible to near playfield magnet. I know sometimes the down microswitch needs to be bent and readjusted. Tried doing that slightly just in case but seems like that's working fine.
5. Made sure the magnet board sense screws were tight and hadn't worked loose over time. Maybe slightly loose but very little if at all.
6. Tried flipping the magnet sense board but that made it worse. Monkey would only travel halfway down and then go back to castle. Tried flipping board back. Then tried moving the board per threads that sometimes the Magnet Sense Switch needs to be relocated and through trial and area can find a way if works well. This would seem weird sense I've had the game 6 or 7 years and generally the monkey almost always picked up the ball. Anyway, couldn't get this to make it work.
7 After several hours and reading threads on this issue and trying suggestions, in desperation I tried replacing the Magnet Sense Switch and then later the coil with the magnet that is what actually picks up the ball. Nothing!!
Out of ideas and have spent countless hours and not sure of anything else to try. Suggestions, please?

Sounds like maybe the monkey pickup magnet isnt getting any power when its active?
Could be a loose connection or broken wire?

Id check it with a meter and trace the wires to it.

#8 8 months ago

Magnet does activate in coil test but guess I could try testing power to it with a meter. That is if the test isn't an accurate way to see if things are fully working?

#9 8 months ago
Quoted from WesleyCowan:

Magnet does activate in coil test but guess I could try testing power to it with a meter. That is if the test isn't an accurate way to see if things are fully working?

The test wont check for loose or disconnected wires.

Check if the wires to it are getting power, trace it back to the PC board.

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