ANSWERS: 3
  • fairly safe bet that the blue gun has shorted, these were not the best set & shocked that it lasted this long - most of these tubes are available but the repair will be around 2x the price of a new set
  • Screen suddenly turned solidblue with white lines running horizontally across it
  • Most video drivers have a spark gap either in the socket or the driver board on the CRT. They prevent high voltage from blowing up the video driver circuit. They don't always work. The Blue driver transistor or its driver is probably shorted. And sometimes the driver I.C. for the 3 colors could be bad also.

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