[Posibly OT?] Tek 321A scope needs help....

Hello all, I recently became the new owner of a Tek 321A scope, but it needs some repairs. Also, I have no manuals, so if anyone could loan me an operator's manual or service manual so I could make a copy, I'd appreciate it.... The main issue is the display. There is what I can only describe as a "cloud" that runs vertically along the center of the display. Varying the intensity and focus does vary this cloud, but it is still present. Also, the trace line is visible, but very out of focus. Wider at the edges, and narrower in the middle. I can take a picture if this makes no sense... I don't know the working condition of the scope, but it was put in a large bin for disposal. It's possible that it was just tosseed in, so it may have been banged around a bit. It seems a shame to toss this unit, as it is in pristine physical condition. The battery holders are very clean, and the unit has no dust or dirt that I can see.... If this is a common problem, or if it seems fixable, let me know what to try.... Rich B.