(Topic ID: 154902)

[SOLVED] Strange Flasher Behaviour


By sojourner353

3 years ago



Topic Stats

  • 12 posts
  • 8 Pinsiders participating
  • Latest reply 2 years ago by littlecammi
  • No one calls this topic a favorite

You

Linked Games

Topic Gallery

One image has been uploaded to this topic. (View topic image gallery).

PDB_D26_(resized).jpg

#1 3 years ago

Hello all,

I have a strange problem on my WPC Dr Who machine, what's happening is when any solenoid or other flasher activates during game play the Second Chance flasher briefly flashes with them, not sure where to start with fault finding this one.

This problem became really obvious after I upgraded to LED's.

Thanks for the help.

Regards.

#3 3 years ago

Can you post a picture of lower side of powerdriverboard, from J122 to J132 ? With some luck wrong plugged

#4 3 years ago

Something similar happened on my friends whirlwind and it was a form of flasher ghosting are you using led flasher bulbs? try putting incandescent flashers back in and see if it stops

#5 3 years ago
Quoted from Drewblood419:

Something similar happened on my friends whirlwind and it was a form of flasher ghosting

This is a known problem on System 11 games due to the flasher circuit sharing the same circuit as the coils, with the workaround being to add diodes to certain coils.

On WPC games, the flasher circuit runs independently from the coil drivers, which is why this is a mysterious problem.

#6 3 years ago

ALL flashers are strange ( Sorry )

#7 3 years ago
Quoted from mbaumle:

On WPC games, the flasher circuit runs independently from the coil drivers, which is why this is a mysterious problem.

The Flashers in this case are located between coil drivers. Idea to lift one leg from tiebackdiode D26 on powerdriverboard ? (with a remark that if this board is used in antoher machine, the Diode has to be soldered back in place.)
PDB_D26_(resized).jpg

#8 3 years ago

Thanks for the reply's everyone.

Problem doesn't exist with incandescent lamps fitted but the LED's are so cool lol.

It definitely seems like a ghosting problem as there is ghosting happening on inserts, just need to get around to flashing the LED MOD ROM to fix that and maybe it will fix that also.

All plugs are in the correct spots on the PDB and was the first thing I checked.

Will flash the MOD ROM this weekend and if the problem still exists will lift the tieback diode on the PDB and post back the results.

Cheers.

#9 3 years ago

That feels pretty significant. The brand/type of LED will be a 'fun fact'. Can you state that?
faz

#10 3 years ago
Quoted from sojourner353:

It definitely seems like a ghosting problem as there is ghosting happening on inserts, just need to get around to flashing the LED MOD ROM to fix that and maybe it will fix that also.

It won't.

LED Rom fix changes timing on Lamp Matrix. Flashers are not on lamp matrix.

1 month later
#11 2 years ago

Problem was solved by removing the tieback diodes as suggested, thanks very much for the help.

#12 2 years ago
Quoted from sojourner353:

Strange flasher behaviour.

We have a strange flasher in our neighborhood, too. Hopefully the police will catch him soon.

Promoted items from the Pinside Marketplace
From: $ 369.95
Boards
PinSound
$ 29.99
Cabinet - Sound/Speakers
Lighted Pinball Mods
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
$ 28.00
From: $ 35.00
Boards
PCB Emporium
€ 4.99
Flipper Parts
Multigame
From: $ 29.00
Boards
KAHR.US Circuits
$ 40.00
Lighting - Other
Rock Custom Pinball
$ 229.99
Lighting - Other
Lighted Pinball Mods
$ 109.99
$ 129.00
Lighting - Led
LED OCD
$ 10.00
Cabinet - Sound/Speakers
Gweem's Mods
$ 50.00
3,200
Machine - For Sale
Saint Petersburg, FL
From: $ 9.99
Eproms
Matt's Basement Arcade
From: $ 20.00
Cabinet - Other
Rock Custom Pinball
£ 82.00
$ 29.99
Cabinet - Sound/Speakers
Lighted Pinball Mods
$ 239.99
Lighting - Led
PinballBulbs
From: $ 5.00
Cabinet - Other
Rock Custom Pinball
From: $ 40.00
Cabinet - Other
Rock Custom Pinball
$ 9.99
Eproms
Matt's Basement Arcade
$ 20.00
Electronics
Yorktown Parts and Equip
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
Great pinball charity
Pinball Edu

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