ukVac.com Homepage
Forum Home Forum Home > Technical > Fix logs
  New Posts New Posts RSS Feed - Space Invaders L Shape x 2
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Skin:


Space Invaders L Shape x 2

 Post Reply Post Reply
Author
Message
RGP View Drop Down
Senior Members
Senior Members

Meeter & Greeter

Joined: 11 Apr 2013
Location: Blackburn
Status: Offline
Points: 4572

Feedback: 5
Post Options Post Options   Thanks (0) Thanks(0)   Quote RGP Quote  Post ReplyReply Direct Link To This Post Topic: Space Invaders L Shape x 2
    Posted: 18 Apr 2017 at 3:58pm
Recently done a couple more Space Invaders PCB repairs for people - both are Midway L Shape boards.

First:


Essentially a dead 8080 CPU

Second:


CPU's INTE line can't be driven which would cause the INT line to toggle - cause: bad 7474 @ 3E

Also explains Fluke 9010 "CTL ERR" message i'd never come across before.

Enjoy and any questions, happy to help.


Edited by RGP - 18 Apr 2017 at 3:59pm
Parts for fixin' and stuff for sale in our webstore here
Back to Top
Judder View Drop Down
Senior Member
Senior Member
Avatar

Joined: 01 Mar 2012
Location: London
Status: Offline
Points: 1660

Feedback: 5
Post Options Post Options   Thanks (0) Thanks(0)   Quote Judder Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2017 at 4:14pm
Thumbs Up
http://www.thedefenderproject.com/
Back to Top
Nes4life View Drop Down
Senior Members
Senior Members
Avatar

First Year of Supporting ukvac.com!

First Year of Supporting ukvac.com!



Joined: 02 Jan 2014
Location: Ashford, Kent
Status: Offline
Points: 4867

Feedback: 5
Post Options Post Options   Thanks (0) Thanks(0)   Quote Nes4life Quote  Post ReplyReply Direct Link To This Post Posted: 18 Apr 2017 at 4:36pm
Enjoyed the videos! Keep 'em coming James
NES4Life
-------------
Owner of ... too many cabs!
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.188 seconds.