Photo: TractorDoc
  1. » Forum
  2. » Tech
  3. » Tech: Early solid state
  4. » rebuilding power board Williams system 3
(Topic ID: 174274)

rebuilding power board Williams system 3

By creativenuts

7 years ago



Topic Stats

  • 9 posts
  • 7 Pinsiders participating
  • Latest reply 7 years ago by SYS6
  • Topic is favorited by 2 Pinsiders

You

Linked Games

You're currently viewing posts by Pinsider SYS6.
Click here to go back to viewing the entire thread.

0
1
1
#9 7 years ago
 
DR

SYS6

Pinside member

AU Sydney

10y 47,150 302 21

I'd replace the 100V zeners in the display section with 92V ones whilst you're at it. There was also a WMS service bulletin that said change R2 and R5 from 680ohm to 1k2 ohm 1/2 W and it's suggested to upgrade R1 and R4 to 39k ohm 2W.

Promoted items from Pinside Marketplace and Pinside Shops!
600 (OBO)
Machine - For Sale
Firepower
Casper, WY
fireonfireoff
From: $ 9.00
Boards
Williams System 3-7 compatible Volume Controls
KAHR.US Circuits
 
$ 27.95
Eproms
ROM FIREPOWER -CPU
Pinballrom
 
$ 170.00
Displays
Led Display Williams Sys 3 4 6, 4x6Num+CM
Digipinball Shop
 
1,400 (Firm)
Machine - For Sale
Firepower
Benton, PA
blbarchik
From: $ 11.00
Playfields
NMP--Sensors for Williams 1ST Generation Drop Targets
Troxel Repair
 
$ 15.00
Playfield - Protection
Firepower Slingshot and Center Target Plastic Protectors
UpKick Pinball
 
Trade
Machine - For Trade
Firepower
Washington Court House, OH
JT-Pinball
From: $ 5.00
Cabinet - Other
Firepower Coin Door Inserts
UpKick Pinball
 
From: $ 90.00
Tools
Pincoder Adapter Rev 1.1
Pincoder Store
 
$ 20.00
Electronics
Power Supply Cap Kit Williams System 3-6 with Diodes
Yorktown Arcade Supply
 
2,900 (OBO)
Machine - For Sale
Firepower
Hawesville, KY
PLAYMASTER
$ 42.95
Eproms
ROM FIREPOWER -SOUND
Pinballrom
 
From: $ 1.25
Playfield - Other
Galactic Posts (black with 'stars', for space themes!)
Rocket City Pinball
 

You're currently viewing posts by Pinsider SYS6.
Click here to go back to viewing the entire thread.

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+!

This page was printed from https://pinside.com/pinball/forum/topic/rebuilding-power-board-williams-system-3?tu=SYS6 and we tried optimising it for printing. Some page elements may have been deliberately hidden.

Scan the QR code on the left to jump to the URL this document was printed from.