oscilloscope display problem, any ideas ?

[smzinno]

hi folks,

I came into a partially working scope yesterday where the horizontal trace only goes halfway across the screen, even at maximum adjustment. I know nothing about these, so just hoping maybe someone's seen a similar kind of problem. it seems otherwise functional, at least the basics anyway. any clues on adjusting/debugging it greatly appreciated. it's a Philips PM3233, unfortunately no manual (hey, for five bucks I can't complain).

thanks for any help -

[VacuumVoodoo]

Horizontal deflection HV generator or time base generator is shot. You need schematic and ANOTHER OSCILLOSCOPE to trouble shoot this.

[smzinno]

thanks voodoo. I've seen some sites that might have the schematic or service manual for sale, might be something I can pursue.