kestep
New member
I acquired a Gorf after a long time without one.
The monitor works and the cab, marquees, and control panel are in pretty good condition.
However, the games does not work. It has the original linear supply.
I checked the voltages at the card rack connector.
The 12V line was high and the +5V and -5V lines were low.
I adjusted the power supply:
12V Line: Was 13.8V, Adjusted to 12.1
+5V Line: Was 4.7V, Adjusted to 5.1V
-5V Line: Was -4.8V, Adjusted to -5.1V
The game still did not boot.
I connected a switching supply in its place.
The game still did not boot.
I have an assortment of untested boards (2 RAM Cards, 1 Pattern Board, 1 CPU Board, 1 ROM Board).
I swapped the cards in one at a time and tried to start the game. After swapping the ROM board in, I get some activity as shown in the pictures, linked below, but the system still won't boot.
I'm looking for some guidance on what to check next. I suspect the Game Board, and have no spare to use to test.
I'd like to try to repair it myself, but won't rule out sending the boards for repair.
Pics:
This is with the Self Test Switch on. The rank lights cycle through in order.
http://carolinapcpros.com/wsarcade/gorfprob1.jpg
This is with the Self Test Switch off.
http://carolinapcpros.com/wsarcade/gorfprob2.jpg
I can upload video of the screen, as the blocks are moving, not static.
Thanks for anyone who can give me a push in the right direction!
The monitor works and the cab, marquees, and control panel are in pretty good condition.
However, the games does not work. It has the original linear supply.
I checked the voltages at the card rack connector.
The 12V line was high and the +5V and -5V lines were low.
I adjusted the power supply:
12V Line: Was 13.8V, Adjusted to 12.1
+5V Line: Was 4.7V, Adjusted to 5.1V
-5V Line: Was -4.8V, Adjusted to -5.1V
The game still did not boot.
I connected a switching supply in its place.
The game still did not boot.
I have an assortment of untested boards (2 RAM Cards, 1 Pattern Board, 1 CPU Board, 1 ROM Board).
I swapped the cards in one at a time and tried to start the game. After swapping the ROM board in, I get some activity as shown in the pictures, linked below, but the system still won't boot.
I'm looking for some guidance on what to check next. I suspect the Game Board, and have no spare to use to test.
I'd like to try to repair it myself, but won't rule out sending the boards for repair.
Pics:
This is with the Self Test Switch on. The rank lights cycle through in order.
http://carolinapcpros.com/wsarcade/gorfprob1.jpg
This is with the Self Test Switch off.
http://carolinapcpros.com/wsarcade/gorfprob2.jpg
I can upload video of the screen, as the blocks are moving, not static.
Thanks for anyone who can give me a push in the right direction!
