Tektronix 2235 Oscilloscope Problem/Repair

I have just acquired a 2235 Option 01 Oscilloscope that has the following problem....
The scope displays the entire trace on just a small portion of the screen.
The horizontal Adjust can move the entire trace off of the screen to the left, but when adjusted to the right the trace stops just before the 6th graticule. When the horizontal Adjust is moved further to the right the trace is compressed into a vertical line just before the 6th graticule.
Has anyone else experienced this problem?