Tag Archives: arcade

They’re coming out of the walls!

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Went out on Friday to go pick up some working monitors I’d heard were available since I have a feeling the repairs on the ones I have are going to take a while. The price was good enough I took the whole group.

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One is a G07, another is a K4600 variant, but the third is kind of an oddball.

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I’ve never seen one of these before. Chassis board is labeled Videomaster13 and the tube is a Samsung unit.

I also noticed the interface board for the K4600 I just got is different from the one on the K4600 in the Mr. Do machine.

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Still need to research what the difference is (I know they take different sync signals at the very least).

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I was going to swap the new to me K4600 into Mr. Do but then found that it had the shittiest brackets ever installed when it was converted. Two pieces of angle stock with four bolts… No support for the rear of the chassis or anything for the monitor to rest on when it is unbolted. Definitely a two person job to remove.

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Also found this when I was having a closer look at the interior of the cab. Original Game Plan Inc. tag for Megatack.

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Coin mechanisms and rules placards for Frogger came in on Thursday. Came from a game that was being converted to a MAME setup and sounds like it had already been butchered pretty badly.

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Was really happy to see these come up, since this type of coin mechanism is kinda rare. They’re Conlux N500 units, and I’ve only ever heard of them being in 80s Sega machines.

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The placards weren’t advertised but I asked if there were any other parts from the game available and got them for a few bucks more. Hoping to snag some joysticks as well since the second player stick is kinda sloppy on this machine.

We got the power

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The Neo Geo I picked up on Saturday came with a handful of relatively minor issues. Among them was a noisy power supply fan that quieted down after a few minutes of operation. Fine if it’s living in a basement arcade, not so much in an office, so it was one of the first things I wanted to fix.

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The power supply in the Neo Geo (an MVS-6-25 oversize upright unit) is a Happ Controls Power Pro. It’s extremely easy to extricate, held in by four screws and hooked up to the rest of the machine but three modular connectors. Once you’ve got it out there’s a handful of standard computer case screws to remove and you’ve got it open.

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Roomy inside, and we can see that the fan used is the same style found in pretty much every desktop computer ever.

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The spare I had on hand was a new Rosewill unit from Newegg, and it had an extra lead for speed monitoring. The one in the power supply had a 2 pin connector so I needed to splice on the old connector to the new fan for it to work. Couple minutes spent soldering and some heat shrink tubing and the operation was complete.

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Everything stitched back together. Overall a very simple repair, but it will make the machine way more pleasant to be around. As a bonus I found an original SNK mini marquee blanking plate and a few dollars worth of quarters under the power supply when I pulled it. Yay!