8 Apr
2016
8 Apr
'16
12:34 a.m.
On Thu, Apr 07, 2016, Seth Morabito wrote:
Hey folks,
I've been on a tear trying to resurrect old projects here, and next on
the list is an ADM 3a.
This particular 3a has no horizontal scan. None at all. I just get a
vertical line down the center of the screen. First thing I checked was
the horizontal deflector on the yoke, which seems secure.
Before I go diving into the schematics, I figured I'd ask here: Is
this a common failure mode? Has anyone else experienced no horizontal
scan on a 3a? Any tips on where to look first?
Is this the same one that was showing all exclamation points on every
other line?
--
Eric Christopherson