Tempest videogame by Atari 1981

This Tempest by Atari is one of the best games made in the early 80's.  These games made buckets of money.  They have an XY color monitor that is very different than standard RASTER SCAN monitors.  These video systems were really oscilloscopes with a blanking circuit and color guns in the tube.  They draw a fast moving dot that is similar to drawing a picture with a pen by hand, only very fast and multicolored.  These games are not easy to fix.  The monitors can be tricky and do not like hot environments.  The transistors on this one had very rusted sockets and 2 transistors ran hot (over 175 degrees) but did not show bad on our parametric analyzer.  The high voltage assembly needed a new connector, caps were changed.  The game transformer assembly had rusted/burned fuse sockets and a destroyed spade lug on the bridge rectifier.  The power supply had a bad pass transistor and resistor.  The game board had bad edge connectors and dirty potentiometers.  The monitor was physically mounted wrong - mounted to the backside of the plywood instead of the front.  This made it rub against the back wall and made it impossible to remove the HV assembly, not to mention the risk of implosion if the monitor fell while removing it.  We placed wood blocks to hold up the monitor while removing the mounting bolts.  When done we placed the monitor through the front of the game and found correct bolts to secure it. 

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