CANYON BOMBER

(Updated 25-jan-2009)

This machine we have bought from a Atari 2600 collector in the Netherlands in the Summer of 2008 (from; Marco), thanks!

Again, JarJar bought it as not-working. The cabinet was empty (no PSU, no light, no monitor).
Luckily the tube-overlay, PCB, shield, cables and an extra panel were present.
Just last week I started on the cabinet. I had no time for it until now :-)

The PCB was faulty (50Hz reset, scrambled picture).
At the end, I have worked 3 days on the PCB.
Two out of the eight 2102 video RAM's were defective.
One defective IC (74ls32) in the reset-circuit.
But also a jerky motion on the white player, needed to replace a 74ls163 horizontal positional counter.
After that the PCB was up and running!

Fawlty PCB, but succeded in connecting B/W to a RGB arcade monitor!

Next was to find me a monitor......
The cabinet originally has an 23" B/W tube. But is hard to find. So I decided to see if I could manage
to connect this board to a RGB tv. My experience in electronics is not that good, but a miracle has happened,
and I succeeded to connect the board on RGB! I used two 470 Ohm resistors to connect the two video-signals
to all the three RGB-inputs and hooked the composite sync using a diode to the sync-generator.
The 470 Ohm is experimental, 220 Ohm gave a too bright white and 1 kOhm gave too dull grey.
Thanks to Dennis I got my hands on a Hantarex 21" monitor and a PSU, bought "as is".
The PSU was okay enough for the Canyon Bomber (+5 and +12 volt present, -5 and -12 volt dead) and it
also provided power to the monitor. The monitor had some corrosion in the high-voltage circuit as well on
the fuses. Nice and sparkly  when I first powered on...... The high voltage coil needed some cleaning inside.

The tube overlay is a bit to large for the 21" Hantarex, although I have amplified the horizontal with
to the max. The height is adjusted to the position I have placed the tube overlay.
As light I used an old Ikea kitchen TL-light. Lookes nice and fitted just right!

Nicely positioned tube overlay.
(PCB still defective)

Then I needed to move the buttons from the original panel (heavily scratched) to the second panel.
This was a hell of a job. Old plastic and corroded nuts ended in one brooken switch, which I had to
repair with glue. At the end it looks nice and the glued button is okay.

The good panel is on the floor left bottom.

Most of the work is now done. I need to cut some wood for the back of the cabinet, that's all.
System is playing and we already had lots of fun!

Have a look at the short youtube-video of JarJar testing the system :-)

Mr.A; 25-jan-2009