(Topic ID: 296015)

Pinbot Random Reboots

By RandyW

2 years ago


Topic Heartbeat

Topic Stats

  • 15 posts
  • 9 Pinsiders participating
  • Latest reply 2 years ago by Doctor6
  • Topic is favorited by 2 Pinsiders

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#1 2 years ago

I am working on a Pinbot and cannot find why it is rebooting. It only does it during game play, is doesn't seem to do it when it is just sitting in gameplay either. For example, I can leave the pin running for hours and never see or hear it reboot. I can start and game and let it sit, never reboots. But start playing and within a few games, it will reboot at a seemingly random time.

I have recorded the voltages while it ran, until a reboot and the voltage never dropped below 4.92.
I have checked every diode on every switch. All checked out good. I even replaced one that tested fine, but looked toasty.
I have checked and repaired any burnt connectors. Power supply has been recently rebuilt, but the DMM test suggests it isn't power related.

The game SEEMS to only reboot while the ball is up around the visor area. But I have not seen any real pattern to what is being hit. All the switches seem to work properly.

The only other issues I have noticed are the player three display, says Error during the Audits display. That is odd and I am not sure what that is about. It is fine in diagnostics. Also a large chunk of flashers are down. But that looks to be a relay issue.

Anyone have any thoughts on what I might be missing?

#2 2 years ago
Quoted from RandyW:

I am working on a Pinbot and cannot find why it is rebooting. It only does it during game play, is doesn't seem to do it when it is just sitting in gameplay either. For example, I can leave the pin running for hours and never see or hear it reboot. I can start and game and let it sit, never reboots. But start playing and within a few games, it will reboot at a seemingly random time.
I have recorded the voltages while it ran, until a reboot and the voltage never dropped below 4.92.
I have checked every diode on every switch. All checked out good. I even replaced one that tested fine, but looked toasty.
I have checked and repaired any burnt connectors. Power supply has been recently rebuilt, but the DMM test suggests it isn't power related.
The game SEEMS to only reboot while the ball is up around the visor area. But I have not seen any real pattern to what is being hit. All the switches seem to work properly.
The only other issues I have noticed are the player three display, says Error during the Audits display. That is odd and I am not sure what that is about. It is fine in diagnostics. Also a large chunk of flashers are down. But that looks to be a relay issue.
Anyone have any thoughts on what I might be missing?

Is this the known Williams reset issue https://kahr.us/index2.html ? If so, there are multiple producers of boards that fix this issue.

https://kahr.us
https://www.pinsound.org/shop/en/58-no-more-reset.html

#3 2 years ago

The +5v power supply dipping can cause this issue when there is a higher than average electrical load on the game. I would first look at possibly re-capping the power supply.

#4 2 years ago
Quoted from Mr_Tantrum:

Is this the known Williams reset issue https://kahr.us/index2.html ? If so, there are multiple producers of boards that fix this issue.
https://kahr.us
https://www.pinsound.org/shop/en/58-no-more-reset.html

Pinbot is a System 11 game, not a WPC game, so these won't work.

Have you checked the slam tilt switches? Are they gapped so close that vibration from the game is activating them or are they shorting to anything? Any battery damage on the mpu?

#5 2 years ago

I have monitored and recorded the 5V line on the MPU until it rebooted. As I stated in the first post, it was steady and never dipped below 4.92 volts.
There is no damage to the MPU. It is not tilting. It is rebooting.

#6 2 years ago

A bad diode on a switch can cause this issue. Usually a standup. I had this problem on a high speed many years ago.

#7 2 years ago
Quoted from Mr_Tantrum:

Is this the known Williams reset issue https://kahr.us/index2.html ? If so, there are multiple producers of boards that fix this issue.
https://kahr.us
https://www.pinsound.org/shop/en/58-no-more-reset.html

Whoa whoa whoa..... what?! Since when did they make these? How the hell do they work??

#8 2 years ago

Random guess. Are the flipper coil diodes up to snuff? My buddy had a Pinbot and the diodes were looped in the eyelets and not soldered. Caused all sorts of issues. Good luck.

#9 2 years ago
Quoted from CrazyLevi:

A bad diode on a switch can cause this issue. Usually a standup. I had this problem on a high speed many years ago.

Good call, its probably worth going through the game and hitting each switch one at a time a few times to see if you can isolate is there is a switch that is causing it if you can't find any visual issues with a diode.

#10 2 years ago
Quoted from RandyW:

The only other issues I have noticed are the player three display, says Error during the Audits display

That's telling you that the checksum is bad for that audit.

Do a clear audits or a factory reset to clear.

#11 2 years ago
Quoted from grantopia:

Have you checked the slam tilt switches? Are they gapped so close that vibration from the game is activating them or are they shorting to anything?

Quoted from RandyW:

It is not tilting. It is rebooting.

A slam tilt (switch on coin door) is different from a regular tilt. The slam tilt on the System 11 actually reboots the MPU.

#12 2 years ago

It looks like I found the issue. One flipper diode was cracked and would rattle away from making a connection randomly. Replaced the diode and poof, no more reboots.

Thanks all.

1 week later
#13 2 years ago
Quoted from grantopia:

Pinbot is a System 11 game, not a WPC game, so these won't work.
Have you checked the slam tilt switches? Are they gapped so close that vibration from the game is activating them or are they shorting to anything? Any battery damage on the mpu?

Thanks for the education.

#14 2 years ago
Quoted from Doctor6:

Whoa whoa whoa..... what?! Since when did they make these? How the hell do they work??

Can't tell of you are being facetious or genuine. If the former then I assume you know all about them, but if the latter you can read about all of the technical aspects here: https://kahr.us

Either way, as posted by others, this is not a fix in this particular instance.

#15 2 years ago
Quoted from Mr_Tantrum:

Can't tell of you are being facetious or genuine. If the former then I assume you know all about them, but if the latter you can read about all of the technical aspects here: https://kahr.us
Either way, as posted by others, this is not a fix in this particular instance.

I'm well aware it doesnt fix this generation. Nope, not facetious, honestly didn't know they made those for wpc.

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