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My Tek 755 trace disappear after switch on

Discussion in 'Troubleshooting and Repair' started by Danny_40, Oct 14, 2007.

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  1. Danny_40


    Oct 3, 2007
    Hello people
    My old Tektronix 755 at power on display trace from each channel and if calibration signal is feed also the timebase seem is working, but after few seconds the trace go off and for displaying newly I need to switch off and on again but the display goes off after few seconds.
    Can somebody help me ?
  2. DJL33B


    Aug 22, 2019
    I had the same problem with a different scope. A bad capacitor in the vertical circuit was causing the trace to drift off-screen.
  3. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    @DJL33B : You realize this thread is over 12 years old?
    Thread closed.
    davenn likes this.
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