(Topic ID: 203201)

Is this Flipper Assembly alright? / Why does my game reboot?


By DrDrain

1 year ago



Topic Stats

  • 7 posts
  • 4 Pinsiders participating
  • Latest reply 10 months ago by wayout440
  • No one calls this topic a favorite

You

Linked Games

Topic Gallery

There have been 4 images uploaded to this topic. (View topic image gallery).

High Current Coils (resized).jpg
20171121_112908 (resized).jpg
20171121_112635 (resized).jpg
20171121_111738 (resized).jpg

#1 1 year ago

Hi dear Pinsiders,

My Starship Troopers is sometimes rebooting, when I press the mini-flipper at the same time with at least one other flipper. It has a third button to flip it.
The boards were all checked by a professional, so I want to check if it's a problem with the mini-flipper.
Strangely without the DMD the game works without any reboots (even with pressing of the mini-flipper).
The DMD and Power Supply Board were checked as well.

I notice that on the "End of Stroke switch" of the mini-flipper there are no wires. Is this the way it should be? Maybe somebody with a Starship Troopers or any other Whitestar game with a mini-flipper of this kind (for example a Rollercoaster-Tycoon) could check this for me.
20171121_111738 (resized).jpg

Then I noticed, that the one cable on the coil seems to be smaller than it is on the other two flippers (Left cable on the picture).
I saw that on some of the other coils (for example the slingshot coils).
20171121_112635 (resized).jpg

I thought that the diode (or the cables) on the coil might be reversed, so I took a look at the manual.
In my opinion it looks fine.
20171121_112908 (resized).jpg
High Current Coils (resized).jpg

I can't figure out where the problem is.
Do you have any idea what could cause this to happen or what I should test?

Any help is greatly appreciated!

#2 1 year ago

You're good on connections. The problem is that you have a low 5 volts. Each board by itself will run fine on the bench, but with the "strain" of flippers, the voltage is dropping too low. There's a leg on the u218 chip on CPU board you can cut, if it isn't, to increase the amount the voltage can drop before it resets. There's also a pot on the power/driver board you can adjust (R116) to increase it. Or have your tech rebuild the 5v power part of your power/driver board. Usually the bridge goes, but there are other parts that can fail as well.

#3 1 year ago

Thank you for your reply!

R116 was already adjusted by my technician.

So I've cut leg 3 on the U218 (on the CPU Board) and leg 3 on U210 (on the Power Driver Board) as Sega service Bulletin Nr.112 says (I found it somewhere on the internet).

The game now works without any reboots. Thanks a lot CadillacMusic!

Thanks a lot to Pinside too, for getting the opportunity to solve this problem!

Finally I can play the game as it should be.

11 months later
#4 10 months ago

Hi everyone, read the thread above and I'm experiencing similar issues. Does anybody have more details about the Sega service bulletin Nr 112?

The game is 'freezing' often during heavy multi ball gameplay. All boards have been serviced, tested and repaired where necessary. Game also has a new DMD controller board.

The fault causes the game to 'freeze', its goes dead with nothing on except for GI. I've read about flipper diodes, BRDG21 possibly needing replacement, but I would perhaps like to try this Sega SB first.

Many thanks in advance.

#5 10 months ago
Quoted from swampy:

Hi everyone, read the thread above and I'm experiencing similar issues. Does anybody have more details about the Sega service bulletin Nr 112?
The game is 'freezing' often during heavy multi ball gameplay. All boards have been serviced, tested and repaired where necessary. Game also has a new DMD controller board.
The fault causes the game to 'freeze', its goes dead with nothing on except for GI. I've read about flipper diodes, BRDG21 possibly needing replacement, but I would perhaps like to try this Sega SB first.
Many thanks in advance.

Most of the time this is caused by low or fluctuating line voltage that dips below 109 VAC. Thoroughly test your line voltage. If you want to try the mod, it increases watchdog tolerance from 5% to 10% by clipping pin 3 of the DS1232. Sega started performing this mod during production so some games may have the mod already. Details here: http://arcarc.xmission.com/Pinball/Stern%20Service%20Bulletins/sb/sb112.pdf

#6 10 months ago

Many thanks for the reply. Interesting that this game was set to 230V (came from the UK) on the jumper settings and we have now changed it to 218V (220V is the nominal voltage here in the UAE) and it appears (hopefully) that the reset issue has been resolved. Will continue to monitor.

Interestingly I inspected the machine to see if the above SB had been incorporated - the U218 chip on the CPU board hasn’t been clipped (although the board was sent away for service) but the U210 chip on the I/O board has......hmmmm.

Anyway - thanks again. Hopefully we have found and cleared the problem!

Promoted items from the Pinside Marketplace
2,700
Machine - For Sale
Algoma, WI
From: $ 16.95
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
$ 10.00
Cabinet - Sound/Speakers
Gweem's Mods
$ 189.00
Displays
Boston Pinball Company
$ 99.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
$ 399.99
Cabinet - Toppers
Great American Pinball
$ 39.00
Playfield - Toys/Add-ons
The MOD Couple
$ 45.00
Playfield - Toys/Add-ons
Great American Pinball
$ 84.95
Cabinet - Shooter Rods
Super Skill Shot Shop
$ 115.00
Playfield - Toys/Add-ons
ModFather Pinball Mods
$ 269.00
Displays
Boston Pinball Company
From: $ 140.00
$ 34.95
Playfield - Toys/Add-ons
ULEKstore
$ 27.99
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
$ 89.00
$ 99.00
Gameroom - Decorations
Pinball Sales

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