Replacing the power jack on a Super Nintendo Entertainment System

Disclaimer: I have no formal training and make no claim to being good at any of this. Constructive feedback and suggestions are welcomed. I’m figuring this stuff out as I go.

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A common failure of SNES consoles is the barrel plug for power. The barrel part snaps off when stressed, leaving the system inoperable. It’s certainly possible to tack onto the two pins without the connector and have it work, but that’s no good when you want to sell it. I can’t remember whether we bought this system as-is for pennies on the dollar, or bought it at normal value and then realized our mistake. Either way, the value of a working system is about $75, and the value of a non-working system in a retail environment is approximately zero.

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Luckily, replacement power plug assemblies are available on eBay for about $12. I used the search term “SNES power repair”. You could get the cost down to eight bucks if you’re willing to buy ten at a time. Now that I’ve done one I might grab the bundle and keep them in the repairs cabinet.

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You’ll need the security bit to remove the special screws on the bottom. Search “NES security bit” to find the set of one 3.8mm and one 4.5mm bit for under $6 shipped. If you also grab the “nintendo tri-wing screwdriver” you’ll have pretty much everything you need to get into every Nintendo case and device. All six of the external security screws are the same, so just keep them all together. I really like magnetic mats and cafeteria trays for this sort of thing.

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Sadly, you have to completely remove the main board from the system in order to access an upside-down screw holding the power jack assembly in place. Just make sure you lay out the screws in the order in which you found them on the board, and you should have no problems. There are three types, so compare by length and color.

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Here’s that upside-down screw that we’ll need to remove. Desolder the legs to the power jack, working it out at an angle. Be careful about the RF Out jack. You have a little bit of wiggle room, but not much. If you break the RF jack off the board you’ll have to re-solder it, which is annoying. If you break it off and don’t want to mess with it, the system will work fine without it, but you won’t be able to use the (inferior) RF adapter, and will only be able to use the (superior) AV cable. Since we’re reselling this particular console, we want it to be right.

The solder used in these systems has a very high melting point. I had to crank my cheap Weller station all the way up to make it flow. If you’ve got a cheap non-adjustable iron, you may not be able to get this done.

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Use desoldering braid to remove the old solder and clear the way for your new connector. Again, high temperature is required.

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Carefully work the new part back in at that funny angle, re-attach the silver screw, and make happy little Hershey’s Kiss shapes with your solder on the legs. Now’s a great time to clean up the flux around the solder pads, as well.

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A tip for the eject button lever: The little spring wire is asymmetrical, and there’s a correct orientation to line it up with the bottom hole. The top part of it slides into a divot instead of forcing you to play games with pliers to make it fit, which I think is thoughtful.

Before you put the screws back in, take this opportunity to give the case a good scrubbing. There’s lots of seams and moving parts, and they’ll never be as easy to clean as they are right now.

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Success! Embarrassingly, I don’t have any SNES games in my house with which to do a final test. I don’t expect any problems, though, and will remind my lackeys to test the system before cleaning it up and packaging it for resale, just in case.

Three Stages of Trade-in Grief

The three stages of drug-addled trade-in customer grief, or maybe delusion:

1. “I’ve got AT LEAST $2,000 invested in these cards/games. I’d like to get at least half of that back. Why are you looking at me like that?”
2. “Look, if I can just get $100 to pay my phone bill and get some cigarettes, I’ll be OK with that.”
3. “$88.40? You guys are the best! Thanks!”

Spending Twenties to Chase Fives

It’s a new month. That means that tonight, I’ll be doing a price update in our point of sale system. I wrote our current system myself, poorly, in Before, it was a shoe-horned open-source point of sale system and the update procedure involved a perl script I did not understand. The current price update procedure is to download a price list from a pricing service and update all the items in the database. If we have a game in stock and the price has changed, the title, quantity in stock, and new price go onto a report that the lackey carries around the store on a clipboard the next day, checking off games as he updates their price tags.

It started off easy enough. Four pages, single-spaced in a 14-point font. Lackeys knocked it out in a couple of hours.


As of last month, it was 19 pages, and multiple lackeys were planning together about who was going to tackle what in the week-long process. The announcement that the next morning there would be a price update waiting on the printer elicited groans, pleas, bargaining, and threats to call in sick.

Something had to be done. I did some tinkering with the reports and realized that something like half of the updated items were only being updated by $1 one way or another. In some cases, game prices would go up by one dollar one month, only to drop by a dollar the next.

So I set it up so that my system ignores price updates of a buck or less if it’s something we have in stock. If we don’t have it in stock, it doesn’t hurt to go ahead and make the update, since it’s not going to make extra re-pricing work.

If a game is on a trend either up or down in value, only changing by a buck this month and by another buck next month, then I’ll be able to catch it as it reaches that $2 threshold.

As a result, my prices are not as bleeding-edge accurate as they could be. But when my average price is 15 to 40 percent lower than my competition, and actually competitive with eBay prices, does it matter if I’m selling it for $33 or $32? Not enough to take up a day or two of lackey time every month. Even if there’s nothing else for them to do, I would rather them spend the time compulsively cleaning the glass, re-sorting Magic cards, talking to customers about games, and looking nervously up at the security cameras.

Don’t spend twenties chasing fives. Let the five go and put the twenty into something more productive, like the Store Mascot Costume Fund.