oscilloscope
This is the screen on my Tektronix 2465 oscilloscope when I power it up. It used to have the lines going all the way across and and when I would connect the probe to the stereo output (as a calibration test) I'd get a waveform.
But now there is no waveform at all, just faint vertical lines when I supply input to channel 1 using the probe. Has anyone else seen this problem before? If you have please tell me what causes it and how I might fix it!
You can see some reviews at EEVBlog: http://www.eevblog.com/tag/rigol/
Specifically Full review of the Rigol DS1052E (a cut down version of this review was included in EEVblog #1 – Rigol DS1052E Oscilloscope Reviwed) and EEVblog #37 – Rigol DS1052E Oscilloscope Teardown.
The distorted square wave signal (something like the top trace?) is due to a mismatch between your probe's capacitance and the scope's input's capacitance. Your probe should have a tiny screw-like slot to adjust the capacitance. Turn it until you see a proper square wave.
The low level you see is probably due to the probe being set to its 1:10 position.
Best Answer
You've had a failure in the horizontal sweep section or the horizontal amplifier.
If you're feeling masochistic, you can try to fix it yourself. Here, for instance is the service manual. You'll notice that, at the least, you need a working scope to troubleshoot. And you'll need access to Tektronix replacement parts.
Take it to a repair service.