| Arcade Collecting > Restorations & repair |
| Gorf Restoration |
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| Scottacus:
The board sets do come up on E-bay pretty frequently but they can be spendy. I usually don't check this forum much anymore but someone sent me an inquiry about the LM339 quad comparator chip. I figured that I'd post to let folks know that the machine that I fixed up has given me many hours of service with absolutely no issues over the last four years just in case anyone is on the fence about fixing one up. The initial work in getting an abused machine back up and running pays off in the long haul! 8) |
| behrmr:
--- Quote from: Scottacus on June 27, 2019, 09:45:50 pm ---The board sets do come up on E-bay pretty frequently but they can be spendy. I usually don't check this forum much anymore but someone sent me an inquiry about the LM339 quad comparator chip. I figured that I'd post to let folks know that the machine that I fixed up has given me many hours of service with absolutely no issues over the last four years just in case anyone is on the fence about fixing one up. The initial work in getting an abused machine back up and running pays off in the long haul! 8) --- End quote --- I’ve worked on enough Gorfs to know that just talking about how good they run seems to be the kiss of death LOL Good work and good luck with keeping it running. It’s a great game. If you haven’t a couple of things I would suggest Make sure you have heat sinks on your customs on the CPU board. They get hot and burn up. Put your CPU board on the outside of the stack for maximum cooling. Some folks even put a fan in and point it at the stack Carry on Space Avenger! |
| Scottacus:
Thanks those are both great ideas! I had one bad 0066-117xx chip with the original board set and had to buy a new board to get that very hard to find chip. I think that I'll take a look at those chips and see if I put heat sinks on them, I think I did but I need to recheck that after seeing your post. The fan is also something I should look into since these boards are spendy and coming up on 40 years old. I have a high score daughter board for the rack so there is no ROM board which opens up air flow in the stack. http://forum.arcadecontrols.com/index.php/topic,149186.msg1555858.html#msg1555858 |
| Scottacus:
I took behrmr's advice to heart and made a 3d printable fan housing that has two slots that let it sit on top of the Bally card rack. I then took two old 12v computer case fans and epoxied them to the top of the case and wired the fans together. Here is a photo of the fans on my spare bally card rack, the square cutout allows part of the wiring harness to pass through while the fans blow air down onto the CPU and game board with its precious Bally 0066-117xx chips. I'll tie the leads into a ground and 12v pins on the card rack once the epoxy is fully dry. |
| Scottacus:
Here it is in the machine And on the first test run a Space Avenger rating! |
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