Hameg 1507-3 No Trace [SOLVED]

[peplegal]

Just got this one.

All initial check seems OK...but at the end, no analog trace is shown, only Digital info...and some dots at the middle.

Any help would be very appreciated.

Thanks.

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Sorry guys...No problem with the Scope. I found out I have to keep a button pressed for a while in order to "unfreeze" the screen.