I tried to figure out which section this belonged in, but imaging is the one that seemed closest. I have a tektronix 5103n(D11) and the horizontal line is always slowly creaping down. Even if I have it probing a voltage. I tried probing a 9V battery and it would show 9V at first then very slowly keep moving down. Is there an adjustment I can make or is the scope in need of reapir? Thank you.
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