[Gold]

I have a Tek TAS 465.  It was an evil bay special. The display has always had a blinking quality to it. In the photo you can see it’s not a crisp trace.  There are light and dark parts.

Then today I got that superimposed low frequency wave. The tone is 10K. I was driving myself nuts trying to figure out what i was seeing. I then removed the DUT and it was still there. I power cycled the scope and it went away.

The text on the display also looks wobbly.

Do you think if I get the scope calibrated it will take care of these display issues or does it need to be looked at in more detail. The calibration houses don’t do “restoration “.

[scott2000]

This guy has a quick video on this unit. Maybe you could reach out to him for any direction on what to look at .

https://www.youtube.com/watch?v=qLMkh0R9hsg

[Gold]

Thanks! It looks like he is dealing with the same sort of display problems I'm having.

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