Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!uunet!mcsun!ukc!slxsys!bae-st!goddard
From: goddard@ste.dyn.bae.co.uk (Steve Goddard)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Help! Changed Agnus - my Amiga is dead(?)
Message-ID: <1991Mar5.132525.26720@ste.dyn.bae.co.uk>
Date: 5 Mar 91 13:25:25 GMT
References: <1991Feb27.145542.22922@mack.uit.no> <10000022@hpmwmat.HP.COM>
Sender: Steve the G
Reply-To: goddard@ste.dyn.bae.co.uk (Steve Goddard)
Followup-To: comp.sys.amiga.hardware
Organization: British Aerospace (Dynamics), Stevenage
Lines: 24

In article <10000022@hpmwmat.HP.COM>, mikep@hpmwtd.HP.COM (Mike Powell) writes:
>	Pin 41 was cut off???  From Agnus?  I don't know what this pin
>	is for for sure, but I have never seen an Agnus missing a 'pin'.

Mike and/or other NTSC folks may not realise that when PAL amigas upgrade to
Fatter Agnus, they have to cut off/bend out of the way the NTSC pin,
otherwise they get an NTSC display (which doesn`t like being displayed on
a PAL monitor). Offhand, I can`t remember the pin no., but 41 sounds about
right. (it`s almost opposite pin 1 [sort of 7 o clock]). According to my
old Amiga manual this pin is called NTSC even on the old fat agnus. I`m not
sure why it is connected on the old one, yet cut off on the new. Perhaps
someone else can enlighten me on that.

Back to the original post, I had almost the same trub when I put in a Fatter
Agnus. First of all I left the NTSC pin connected, and got a luvverly NTSC
display (flickered like mad, but I could see the 1meg CHIP ram was working)
. Took it out, killed NTSC pin, and it never worked from then onwards. To be
fair, when taking it out on this occasion the screwdriver (!) slipped and
bent some other pins, which I never got back straight. In my case, I got the
RAM check etc power up screens, but no 1.3 hand or power light, just a blank
screen. Exit 1 fatter agnus chip towards waste receptacle. Byebye 65 UKpounds.

Steve the G.
  "You can lead a hacker to a terminal, but you can't *make* him code"