(Topic ID: 231019)

SLAM BANG! Turning on my System-1


By JethroP

5 months ago



Topic Stats

  • 37 posts
  • 9 Pinsiders participating
  • Latest reply 5 months ago by JethroP
  • Topic is favorited by 1 Pinsider

You

Linked Games

Topic Gallery

There have been 7 images uploaded to this topic. (View topic image gallery).

Screen Shot 2018-12-08 at 8.44.53 AM (resized).png
IMG_9707 (resized).JPG
IMG_9696 (resized).JPG
IMG_9695 (resized).JPG
got reset (resized).JPG
Screen Shot 2018-12-06 at 8.09.06 PM (resized).png
IMG_9691 (resized).JPG

You're currently viewing posts by Pinsider Tuukka.
Click here to go back to viewing the entire thread.

#8 5 months ago

Changing the caps often helps in reset problems.

In a battery-backed up CMOS RAM, the current is so low that the usually stated 0.7V drop across a diode is actually much less, about 0.2V even in silicon diodes. Anyway you should be able to use three batteries.

#20 5 months ago

There was a modification for the reset circuit in an old Gottlieb service bulletin. You can find the description in
http://tuukan.fliput.net/sys1_en.html#viat

#24 5 months ago

Looks like you have a later revision board that already has the modified reset circuitry. Next step would be to replace Z2, and also check transistors Q5 and Q6.

One common cause for all solenoids on is bad or missing -12V from power supply. So if your power still has the original electrolytic capacitors, they should be replaced, at least C1 and C4.

#35 5 months ago

Game starting correctly only after turning power off and back on is a classic symptom of bad electrolytic capacitor. Replace C1 on power supply. You can also try warming the cap with a hairdryer before turning on, and see if it then starts correctly. Failing caps work a little better when they are warm.

Promoted items from the Pinside Marketplace
Trade
Machine - For Trade
Medina, OH
$ 49.00
€ 8.40
$ 399.95
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
$ 149.99
Playfield - Toys/Add-ons
Lighted Pinball Mods
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
$ 8.00
Cabinet Parts
RPGCor
$ 89.95
Cabinet - Shooter Rods
Super Skill Shot Shop
$ 89.99
From: $ 220.00
Playfield - Toys/Add-ons
CzTV Mods
$ 35.00
Cabinet - Decals
Bright Lights Pinball
From: $ 42.00
Cabinet - Shooter Rods
ModFather Pinball Mods
$ 35.00
Playfield - Toys/Add-ons
3D MODS
$ 69.99
Playfield - Toys/Add-ons
Lighted Pinball Mods

You're currently viewing posts by Pinsider Tuukka.
Click here to go back to viewing the entire thread.

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