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A problem with display on an oscilloscope

  1. May 21, 2012 #1

    I have acquired an older LeCroy oscilloscope from someone. It used to work, but now when I plug it in, the screen is orange (normally letters and lines and things are orange, but now the whole length of the screen is). It doesn't take up the entire screen, but I cannot see any menus where they should have been either.

    Does anyone have any thoughts on this? It still prints out waveforms on paper, just the display is being a jerk. I haven't been able to find much online.

    Thanks in advance!
  2. jcsd
  3. May 22, 2012 #2


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    Science Advisor

    That sounds like excess brightness. It may be that the brightness or "intensity" control has been wound up too high, or there may be a fault in the circuitry that provides voltage for the Cathode Ray tube (if it uses one) or the LCD display.
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