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Major Havoc
Platform: Arcade  
Game: Major Havoc   Display Type: vector  
Manufacturer: Atari   Resolution (W x H):  
Year Released: 1983   Orientation: H  
Main CPU:   Audio Channels: 1  
# of Players: 2   # of Buttons: 2  
# Simul. Players: 2P alt   Genres: Shooter, Misc.  
     
Controls: Analog (Spinner, Trackball, Steering Wheel, Special Joystick)  
     
MAME Driver Status: good   MAME Driver Emulation: good  
MAME Driver Sound: good   MAME Driver Color: good  
MAME Driver Graphics: good    
A042622
A042622
A041347
A041347
A041347
A041347
A041347
A041347
A041347
A041347

Dip switches used by this game

The link below will take you to another page that shows all the dip switch settings for this game.  Dip Switches have their own page to make it more printer friendly.
 

Memory Map for this game

If you need a memory map for your game that you are working on repairing, you can view that with the link below. 

ROMS used by this game

The following is a list of ROMS that are used by this game.  Many games had multiple versions of ROMS.  If you are not sure which version of ROM you have, you can use the ROM Identification Page to upload an image and find out. 
Rom Name Ascending
Rom Size 
SHA1 
CRC32 
Location 
Expand Major Havoc (prototype) found in MAME ROM Set: mhavocp Released in 1983
Expand Major Havoc (rev 2) found in MAME ROM Set: mhavoc2 Released in 1983
Expand Major Havoc (rev 3) found in MAME ROM Set: mhavoc Released in 1983

PCBs for this game

The following is a list of the PCB's used by this game.  Many games had multiple versions of the different PCB's.  For more detailed information about a PCB, click on the Part # link for that PCB.
Part Number 
Description 
Stack Part Number 
Pcb Function 
Contributor 
A042622 Quad POKEY Eliminator.  As the name implies, it replaces a "Quad POKEY" chip by using 4 POKEY's.  There are reproductions of this board out there as well. DaughterBoardArcadenut
A041347 Major Havoc, Color Vector game by Atari.  Board contains the Atari Quad POKEY eliminator. EntireGameArcadenut

Parts for this game

The following is a list of the Parts that can be used by this game.  Many games used the same parts.  For more detailed information about a Part, click on the Part # link for that Part.
Part Number 
Part Type 
Description 
Manufacturer 
Part Group 
WG6100 MonitorNOTE: This monitor has the LV2000 upgrade kit installed in it.  The cage is also off the HV section as I was repairing the monitor at the time the pictures were taken.Wells GardnerWG6100

Repair Logs for this game

The following is a list of the Repair Logs for this game.   For more detailed information about a Repair Log, click on the Title link for that Repair Log.
Title 
Symptom 
Solution 
Status 
No Picture
My friend Dan brought his Gravitar over and it was playing blind.
 
You can hear chatter, see neck glow, but there is no static on the screen.  The monitor was essentially dead.
See Diagnostic steps for full solution. Fixed
Tempest Plays Blind Turned my Tempest on the other day and I got no picture.  Was able to coin up the game and play blind. Rebuilt the monitor.  Upgraded it to an LV2000, replaced Caps, and Diodes D100-D104. Fixed
Game is restricted to the lower right corner of the Screen. After rebuilding my 6100 for Tempest, I encountered this new issue where the you could see the full game, but it was in the lower right corner of the monitor.  It appears to have full deflection, but it doesn't fill the entire screen.
Had a bad LV2000.  The nice thing about the LV2000 is they will replace it for free if it ever goes bad.  Just luck of the draw that I had a bad one.  Still highly recommended.
 
The main problem was is it wasn't putting out the proper voltage to the HV section.  The HV section needs +26V DC and -26V DC,  the the LV2000 was only putting out the +26V DC so the monitor was drawing the entire image in the lower right corner.
 
So if you don't have an LV2000 installed, then the problem is in the Low Voltage section and either fixing the low voltage section, or by upgrading to an LV2000 it will fix this issue.
 
 
Fixed
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