In this video we restore a Mattel Intellivision game cartridge to full working order using cotton buds and isoprpyl alcohol. <br /> <br />A ROM cartridge, sometimes referred to simply as a cartridge or cart, is a removable enclosure containing read-only memory devices designed to be connected to a consumer electronics device such as a home computer or games console. ROM cartridges can be used to load software such as video games, or other application programs. <br />The Intellivision was developed by Mattel Electronics, a subsidiary of Mattel formed expressly for the development of electronic games. The console was test marketed in Fresno, California, in 1979 with a total of four games available,[6] and was released nationwide in 1980 with a price tag of US$299 and a pack-in game: Las Vegas Poker & Blackjack. Though not the first system to challenge Atari, it was the first to pose a serious threat to Atari's dominance. A series of advertisements featuring George Plimpton were produced that demonstrated the superiority of the Intellivision's graphics and sound to those of the Atari 2600, using side-by-side game comparisons. <br /> <br />One of the slogans of the television advertisements stated that Intellivision was "the closest thing to the real thing"; one example in an advertisement compared golf games. The other console's games had a blip sound and cruder graphics, while the Intellivision featured a realistic swing sound and striking of the ball, and graphics that suggested a more 3D look. There was also an advertisement comparing the Atari 2600 to it, featuring the slogan "I didn't know". <br />Super Video Arcade <br /> <br />Like Atari, Mattel marketed their console to a number of retailers as a rebadged unit. These models include the Radio Shack TandyVision, the GTE-Sylvania Intellivision, and the Sears Super Video Arcade. The Sears model was a specific coup for Mattel, as Sears was already selling a rebadged Atari 2600 unit, and in doing so made a big contribution to Atari's success. <br /> <br />In its first year, Mattel sold 175,000 Intellivision consoles, and the library grew to 35 games. At this time, all Intellivision games were developed by an outside firm, APh Technological Consulting.[6] The company recognized that what had been seen as a secondary product line might be a big business. Realizing that potential profits are much greater with first party software, Mattel formed its own in-house software development group. <br /> <br />The original five members of that Intellivision team were manager Gabriel Baum, Don Daglow, Rick Levine, Mike Minkoff and John Sohl. Levine and Minkoff, a long-time Mattel Toys veteran, both came over from the hand-held Mattel games engineering team. To keep these programmers from being hired away by rival Atari, their identity and work location was kept a closely guarded secret. In public, the programmers were referred to collectively as the Blue Sky Rangers. <br /> <br />By 1982, sales were soaring. Over two million Intellivision consoles had been sold by the end of the year, earning Mattel a $100,000,000 profit. Imagic began releasing games for the Intellivision, as did hardware rival Coleco. Mattel created M Network branded games for Atari and Coleco's systems. The most popular titles sold over a million units each. The Intellivision was also introduced in Japan by Bandai in 1982. <br /> <br />The original 5-person Mattel game development team had grown to 110 people under now-Vice President Baum, while Daglow led Intellivision development and top engineer Minkoff directed all work on all other platforms.