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Article View: comp.sys.amiga.tech
Article #11789

monitor blues

#11789
From: Mark D. Henning
Date: Tue, 14 Mar 1989 04:43
40 lines
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Hello all you Tech types,

I am having a great big problem.  I Just bought a used amiga 1000 w/
512K.  It replaced a 128 system which was just getting too small for
my purposes.

The problem is that I was unable to sell my monitor with the package,
So I have an RGBI/composite monitor hooked up to the 1000 (Thompson
4160/36382).  This is not in itself a problem, except that the Verticle
sync seems to be messed up.

I can turn the vertical hold adjust on the front of the monitor and the
hold position is just outside of the limit of the control.  The other
direction from center yields faster rolling with no hold position.

I have isolated that the monitor is not at fault, bacause it works
just fine on the 128 RGB interlace mode.  The cable I made is correct
(I have checked this at lease 5 times...)

since the verticle sync is the problem, I tried both pins 12-9 and
10-9 and neither combo stopped the rolling.  I later scoped the RGB
port and found all the signals to be present (although I am not sure
if the frequency was correct)

I tried my roommate's Amiga monitor, and the video is perfect.  Oh
also, the Thompson on composite is just fine, except that everything
in certain applications is dayglow orange or a nausiating green which
makes things utterly unreadable.)

do I have any recource other than trading in the Thompson, or is there
something I can do.  (I realy wouldn't mind the tradein, but well, Mr.
Visa and I have been getting a little too chummy laytely and I have
been trying to cut back before I get myself neck deep in debt.)

					Thanks in advance,
					Mark Henning

Address: henning@stolaf.edu
UUCP: henning@stolaf.UUCP
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From: henning@agnes.uucp (Mark D. Henning)
Newsgroups: comp.sys.amiga.tech
Subject: monitor blues
Keywords: RGBI Monitor rolling
Message-ID: <1516@thor.acc.stolaf.edu>
Date: 14 Mar 89 04:43:25 GMT
Sender: news@thor.acc.stolaf.edu
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