Hi,
I recently picked up one of these PM3217 fairly cheap locally as I have been wanting to get into EE.
This is my first scope and I don't really have a lot of knowledge generally. I am decently experienced with soldering, but not really understanding the inner workings and reasons behind it.
Anyway, the scope seemed to be working fine but once I got it home it started to have a problem where the traces are like 1cm wide in the middle of the display:
.
If I leave it on for a while, it will intermittently switch between working properly (with the beam moving left to right like it should) and then getting stuck in the middle again.
Does anyone have an idea as to what might be wrong? Is this a setting somewhere or perhaps some failing caps? Like I said I am fairly comfortable doing some soldering if needed to get it working again, but my diagnostic game is not strong.
Thanks