EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: electronic_guy on February 26, 2022, 06:49:28 am
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Hi,
I have a tektronix 2230 oscilloscope which was working fine and suddenly the trace dissappeared while I was working on a very simple circuit (resistor and capacitor to test a differentiator). The display is working. I can see the readout when turned on with readout toggle.
The following are the observations I can make now on the oscilloscope. I have attached the screen image and the configuration of the controls below that image.
When I pressed the beam finder button, I can see a dot in the bottom of the screen, (image = 20220226_120459.jpg) (image = 20220226_115120-min.jpg)
(http://[attach=1])
(http://[attachimg=2])
When I pressed the P-P Auto the trigger, the light dissappear and beam finder shows a short line in the bottom of the screen. ( image = 20220226_115137-min.jpg) ( image = 20220226_120956-min.jpg)
(http://[attachimg=3])
(http://[attachimg=4])
I'm a complete beignner to this troubleshooting. I would truly appreciate any help for me to recover this oscilloscope.
Thank you.
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Something has failed. First thing I'd do is check all the power supply rails in the scope.
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Until you repair it, turn down the spot intensity. Without deflection, there is a risk the spot will permanently damage the fluorescent layer of the tube.