hello from Mexico, i have a tek 465 with trace not centered in the screen, it moves up and down when change volt/div knob, i need readjust with the vertical adjust knob, this is worst in channel 2, in some settings it dissapears up or down in the visible screen area and in others moves and still visible, i need to readjust the vertical position for see and/or center it again.
any suggestion or idea?
best regards.
Pio