I bought a 2 hand Hameg 504 scope .
At the begining ,the powersupply unit does not work.After 3 day's work .it works fine now . but when I pressed "AUTOSET " the trace line is not in the middle ,it is deviation to left of centre. I must move it by the "X-POS" knob ,When I press "AUTOSET "again ,the trace move to the left again.
When I open the "MANUAL ADJUSTMENT MENU" and select the "SWEEP GENERATIOR" it says"PRESS SECURITY KEY !"
What should I do next
? .