(Topic ID: 223556)

Shadow flippers cause reset but DC voltage is stable?

By ryan98011

5 years ago

Topic Stats

6 posts
5 Pinsiders participating
Latest reply 5 years ago by Pin_Guy
Topic is favorited by 1 Pinsider

You

You are not signed in!

Find in topic

Linked Games

Shadow, The Bally, 1994

Hey all,

I just acquired a Shadow and am troubleshooting a gremlin. When both flippers are fired (and only both) the game will reset.. reliably 95% of the time. I've read that this is likely a power issue.

DC voltage at the game ROM on the CPU board is steady at 5.05VDC (+/- .03) before, during, and after the reset.

I know many people will automatically replace BR2 and C5 but, with the voltage steady, will this still possibly fix the issue?

I have looked at the flipper coils and flipper coil diodes and there are no apparent cold solder joints.

Any suggestions would be much appreciated.

Thanks! Ryan

I'd go through the reset check list :

http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#Game_resets

And the game isn't on an extension cord or other big appliances on the same line ?

LTG : )

I would check the diodes first - current feedback will usually cause a reset.

Just replace all the caps on the driverboard , they are to old to function right.
Lets see if it did fix it.

Quoted from melappels:
Just replace all the caps on the driverboard

Don't do that. You'll do more board damage than good.

LTG : )

Quoted from melappels:
Just replace all the caps on the driverboard , they are to old to function right.
Lets see if it did fix it.

That is the best way to ruin a power driver board, not everyone on here are professional board repair technicians.

Promoted items from Pinside Marketplace and Pinside Shops!

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, subscribe to Pinside+!

Help – Contact – About Pinside – Support Pinside – Top

Shadow flippers cause reset but DC voltage is stable?

By ryan98011

5 years ago

Topic Stats

You

Find in topic

Linked Games

ryan98011

LTG

WeirPinball

melappels

LTG

Pin_Guy

Reply

Hey there! Welcome to Pinside!