Newsgroups: comp.sys.amiga.hardware
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!swbatl!davidh
From: davidh@swbatl.sbc.com (Dave Howarth 5-9085)
Subject: Scratchy Audio in rev 4.1 Amiga's
Message-ID: <1991Apr1.162745.22398@swbatl.sbc.com>
Followup-To: dave@swbatl.sbc.com 
Organization: Southwestern Bell
Distribution: usa
Date: Mon, 1 Apr 91 16:27:45 GMT

	Many many moons ago, there was a motherboard modification released
by Commodore for the 4.1 rev 2000 motherboards which fixed a scratchy audio
problem.  The problem did not affect all 2000's and for years I thought mine
did not have the problem.  After comparing some music with other Amiga's, 
I'm convinced my 2000 does in fact have the problem.  The problem is more
subtle than I expected.  I am now looking for the fix released by Commodore.
My dealer was not in business in 88 when the fix was released and doesn't
seem to know what I am talking about.  I'm hoping someone on the net with
a good memory (or a lot of storage) will have the fix.  I think it had
something to do with soldering across some resisters or filters or such.
Any information will be appreciated.

				David Howarth
				314-235-9085
				dave@swbatl.sbc.com