I've got an Acorn AKF-17 on my workbench, serving duty as a test monitor
and the display for my Acorn A3000. For those not in the know, it's
essentially a Philips CM8833 Mk.II chassis with most of the inputs
blanked off. It's actually quite a nice monitor, except the power switch
is on the back (I prefer front-mounted power switches) and it's not
quite as nice looking as the metal-case Microvitec Cub (which has a nice
industrial look going for it).
Here's the catch. It seems to have a bit of a problem in the video
synchronisation department.
Specifically, the picture rolls vertically (from bottom to top), and
seems to move to the right as it does so. In other words, a vertical
line turns into a forward-slash.
Has anyone worked on one of these "fine" monitors (CM8833, CM8833 Mk2,
AKF17 or one of the many re-brands e.g. Atari SC1435) before?
What should I be staring daggers at first?
Does anyone know where I might be able to get a service manual (or at
least a schematic set)? I've got the Mk1 schematics and service manual,
but not the Mk2. Apparently someone posted them to Rapidshare last year
but the link is now rather dead :(
Also, does anyone know where I might be able to get a new power switch?
Apparently it's an ITT ME5A, Philips 12NC number 4822 276 11504 though I
can't confirm this (I don't have an AKF17 or CM8833mk2 service manual).
I've ruled out the A3000 -- MonitorType is 0 (TV-rate monitor) and Sync
is 0 too (composite sync). If I switch to Separate Sync (MT0/SYNC1), my
LCD monitor (an NEC EA231WMi) will lock on and display video...
Cheers,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/