🚀 go-pugleaf

I too made my own cable when I first got my Diamond Scan while I awaited the
"official" one from Redmond.  I had the same problem.  When the cable arrived
I had another problem, evidently the 23 pin connector had an inductance or
capacitance problem which caused the green line to be delayed  by about a high
res pixel.  The result was that an increase in intensity from a pixel to the
next resulted in a pink/purple looking effect and a decreasing intensity saw a
green tint effect.  After some destructive testing of the cable, I determined 
the 23-pin connector to be at fault and built another cable using a hack-sawed
25 pin as the Amiga end.  What I ended up hooking up (different from the 
interim cable with the boot up problem) was the R,G and B lines (obviously),
the composite sync (made of both horz and vert syncs) and one ground from the
sync ground.  Here is what I use (and it works completely):

Amiga                 Diamond Scan
-----                 ------------
  3                        2
  4                        4
  5                       14
 10                       16
 16                        1,2,4,15

Believe it or not this works flawlessly and there is no need for separate horz
and vert syncs (and indeed this causes problems) or the inverter included with
the Redmond cable (the montor is versitile enough to allow positive or negative
syncs).  I hope this helps, and any other queries are welcome.
 
 _______              __________
  _/____) '  __  /_/       /  '  /  / __  _      "N.I.N.J.A.J.I.S."-Me
  /  \___/__/___/ |_      /__/__/__/_/_-_/__/_/  The Displaced Razorback.
  ___________________________________________/   Founder:  IDGAFF Ltd.
The Amiga Computer - "...a more fiendish disputant than the Great
Hyperbolic Omni-Cognate Neutron Wrangler of Ciceronicus Twelve..."
-D.Adams;  Well, almost.