Hameg Hm203-4 oscilloscope y axis issue

[sahko123]

ive got a Hameg oscilloscope from whenever ago and i like an idiot decided to assemble it months after having taken it apart  . So i put it back together turned it on and.. Yay! it displays a trace..."hmm lets plug a signal into it. Ok that displays fine. Its a bit high up lets move it down. WTF". in more proper terms the y axis range is limited to about a third the way up the screen and to the top. does anyone know what can be wrong and have they encountered this sort of issue before? Thanks

[sahko123]

 wanna die... 20 hours and it all came down to one of the crt wires hanging loose..........

[shakalnokturn]

If you're not suicidal, at least it's a happy end.