Does anybody have any troubleshooting hints why my 475 won't display
a horizontal trace above .5 us? (Vertical is fine). I cleaned all
of the horizontal sweep switch contacts to no effect (and that was
quite a delicate little job). All of the supply voltages are normal,
trigger works well. I am using a CFG250 for the signal source.
I have a copy of the service manual but the timing and horizontal
display switching schemo is illegible (along with the horizontal