Introduction
When games have been in storage or used for years on end, they need to get a good dose of TLC. In extreme cases you need to crack them open to get everything. It can be tense opening up a loved game in the fear that you'll destroy it.
Alternatively, you can open up a game no one liked and make it into an innocuous enclosure for something else.
Tools
Parts
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            On the bottom front corners of the cartridge you should see two screws using the 3.8mm "Gamebit" screwdriver bit. A 3.0U Spanner bit can also get them out. 
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            Once the screws are out, slide the front part of the plastic casing down to clear the tabs on the top of the case. 
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            The two halves of the case should open easily. 
 
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            At this point the game board and pins are freely accessible. 
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            Here you can fully clean the pin set and inspect for damage to the circuit board. 
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            Cleaning the pins is the easiest part; use a cotton swab and either a rich mixture isopropyl alcohol or Brasso. Other people swear by an eraser(the white kind), but it can lead to damage if you're not careful. Personally, Brasso works the best. 
 
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            Games with battery backup (allowing for save games to be stored in SRAM) allow access to the battery at this point for replacement. Most of the time the battery is a button cell: CR2032. 
 
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To reassemble the cartridge, follow these instructions in reverse order.
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