Main Restorations Software Audio/Jukebox/MP3 Everything Else Buy/Sell/Trade
Project Announcements Monitor/Video GroovyMAME Merit/JVL Touchscreen Meet Up Retail Vendors
Driving & Racing Woodworking Software Support Forums Consoles Project Arcade Reviews
Automated Projects Artwork Frontend Support Forums Pinball Forum Discussion Old Boards
Raspberry Pi & Dev Board controls.dat Linux Miscellaneous Arcade Wiki Discussion Old Archives
Lightguns Arcade1Up Try the site in https mode Site News

Unread posts | New Replies | Recent posts | Rules | Chatroom | Wiki | File Repository | RSS | Submit news

« previous next »
Pages: [1]
  
Go Down

Author Topic: Mortal Kombat 2 - Cmos chip U49 bad  (Read 3929 times)

0 Members and 1 Guest are viewing this topic.

big boss

  • Trade Count: (0)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 14
  • Last login:April 06, 2014, 02:28:59 am
Mortal Kombat 2 - Cmos chip U49 bad
« on: August 08, 2010, 09:22:28 am »
Hello Friends,

i have buy yesterday a MK2 pcb, yesterday i havent problems with it. Today i have cmos U49 bad. I cant play. See the foto and movie. What is the problem, what can i do?
Sorry for my bad english  ;D

http://www.abload.de/image.php?img=u49xxeo.jpg



best regards
big boss
Logged

Kevin Mullins

  • Trade Count: (+2)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 4504
  • Last login:February 01, 2021, 01:29:34 pm
    • Me on Myspace
Re: Mortal Kombat 2 - Cmos chip U49 bad
« Reply #1 on: August 10, 2010, 09:26:15 am »
I'd start by checking the onboard battery for the CMOS. (3volt 2032 or 2025 I believe)

Or change the physical dipswitch settings for the Coinage.
(Bank 2, SW1 OFF)

http://arcarc.xmission.com/PDF_Arcade_Manuals_and_Schematics/Mortal_Kombat_2_%2816-40029-101_Oct_1993%29.pdf
Logged
Not a technician . . . . just a DIY'er.

Malenko

  • KNEEL BEFORE ZODlenko!
  • Trade Count: (+58)
  • Full Member
  • ***
  • Offline Offline
  • Posts: 14019
  • Last login:July 02, 2025, 09:03:11 pm
  • Have you played with my GingerBalls?
    • forum.arcadecontrols.com/index.php/topic,142404.msg1475162.html
Re: Mortal Kombat 2 - Cmos chip U49 bad
« Reply #2 on: August 13, 2010, 08:22:49 am »
like kevin said, change it to use dip instead of CMOS, its the free-est easiest fix. After you do that, let us know if you can play.  The game over screen is a hilarious slap to the face.
Logged
If you're replying to a troll you are part of the problem.
I also need to follow this advice. Ignore or report, don't reply.
Pages: [1]
  
Go Up
« previous next »