[comp.sys.amiga] Video problems

BYRD@HEAP.CISCO.COM (Bruce Byrd) (03/10/90)

Jumping into the desktop video world late last year I decided to 
go with the Amiga thinking it was the best choice.  I have a 
2000 with added memory, Supra card, and a Mitsubishi Diamond Scan
monitor (first mistake).  I also purchased a Frame Grabber at the
same time.

My first problem was hooking the Frame Grabber to the Diamond
Scan.  My dealer didn't have a cable for this and referred me
to Redmond Cable.  The first cable I got from them didn't work
and after ohm'ing it out I compared the pinouts with the signal
diagrams in the Amiga manual and the monitor manual and not one
was right (not even close)!  After convincing Redmond that they
made a mistake (the person I dealt with was not too pleasant) I
finally got a cable that worked. Whew, one down...

I went off to digitize the world and continue my software purchases
waiting for the day that the Supergen 2000s would be available.  It
finally was released and I kept calling the dealer with credit card
in hand waiting for them to get one.  It took a couple of shipments
but they finally had one when I called and I went down to make the
$1500 plunge. 

The installation went pretty smooth and turned it on to see what
I basically bought the Amiga to do.  I was surprised not to get any
RGB output (well a few squiggly lines).  I took my unit into my
dealer and after doing some swapping with their unit/cable it
turned out that the RGB cable to the Diamond Scan was causing
the problem (a Commodore monitor worked).  I was able to use
the composite output from the Supergen to my monitor so I was
able to do some taping with this configuration. My dealer talked
to some manufacturers and determined that another type of cable
was needed to handle a composite sync.  Two weeks later, they say
it should be in from Redmond (yikes) anytime. I'm waiting to see
if this takes care of it. 

Now, for chapter 2- I had this insane idea to try my Framegrabber for
the first time with the SuperGen installed.  I hooked up the RGB port
to the Framegrabber and the "special" cable from the framegrabber to
the monitor (RGB) and it seemed to work UNTIL I pressed the button to
digitize a picture.  When I did, my system locked up and I had to power
off.  Powering it back on, the Supra wouldn't boot and I periodically
got SCSI busy messages.  Since the green harddisk light was on solid I
followed the Supra manual which said that AmigaDos might be verifying
the disk which would take 1 to 20 minutes.  45 minutes later I decided
to boot off floppy and when I did, I was able to access the hard drive.
Don't ask me why, but after that the Supra was able to do a warm boot.

Now that I was up and going again, at least I thought I was, I began to
call up some pictures in Photon Paint but the system would crash every
minute or so.  After some troubleshooting I discovered that with the
cable plugged into the RGB port (no matter if it was connected to 
anything on the other end) the system would crash.  Disconnecting it
stopped the crashing.

Talking with a nice gentleman at Digital Creations (SuperGen) he
had the same idea that I had and that the cable might be bad.  Well bad
or mis-cabled.  I'm taking my unit back to my dealer with my entire 
$6000+ investment to hopefully get a resolution to all this and be 
pro-Amiga again.  At this point my suggestion to the net world is NOT
to buy a monitor that the Amiga community hasn't ever tested their
products with like the Diamond Scan.  I can't rule out that my Amiga
might not be doing what it should like having the right voltage levels,
etc.  

Bruce Byrd
byrd@cisco.com