Troubleshooting CRT Displays
Troubleshooting techniques for displays vary greatly from display to display. It is imperative that you refer to the service manual for any given display to ensure the most accurate troubleshooting information.
If adjusting the user controls discussed earlier in this lesson does not fix any perceived problems with a CRT display, try following the instructions on color calibration and geometry adjustments. If the CRT is still not functioning satisfactorily, the problem is likely to be the result of internal hardware failure. In that case, you must give serious thought to whether repair is an economic alternative to replacement.
There are dangerously high voltages inside a CRT, and very few serviceable parts or adjustments. ...
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