John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum
April 09, 2025, 04:36:42 pm *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Welcome to the John's Arcade Forum. Glad you made it! Smiley
 
   Home   Help Search Calendar Login Register  
John's Arcade Forum - Classic Arcade and Pinball Collecting and Restoring Discussion Forum - RETRO MAME - Nintendo Vs Forum > Tech and Marketplace > I need help with my game! - Technical Discussion (Moderator: AgentX) > Williams Defender Problem
Pages: [1]
« previous next »
  Print  
Author Topic: Williams Defender Problem  (Read 3266 times)
0 Members and 1 Guest are viewing this topic.
Depeche
Newbie
*
Offline Offline

Posts: 2


View Profile
« on: February 22, 2016, 09:41:16 pm »
Hello,

Not the best first post and straight to the point... I didn't "measure twice and cut once" when making my 4116 to 4164 adapter and I jumped the pins on the power supply side and pumped +12V through pin 7 to the 4164 ram chips and whatever else pin 7 supplies.  So knowing what was screwed up, what did I fry besides the Ram and possibly the +5V power supply circuit as the +5 LED is no longer lit?

... putting on my flamesuit now  Cry
Logged
iankellogg
Global Moderator
Hero Member
*****
Offline Offline

Posts: 1433



View Profile
« Reply #1 on: February 23, 2016, 08:44:03 am »
depends on how long you left it on.

i would be surprised if you didn't short out most of the board.
Logged
https://iankellogg.com
Cap kits, eproms, and more
Depeche
Newbie
*
Offline Offline

Posts: 2


View Profile
« Reply #2 on: February 23, 2016, 01:03:39 pm »
about 20-30 seconds  Embarrassed
Logged
Pages: [1]
  Print  
« previous next »
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Install Simple Machines Forum Valid XHTML 1.0! Valid CSS!