Path: utzoo!attcan!uunet!bellcore!att!pacbell.com!decwrl!fernwood!portal!gdc!aminet!czaeap!cpc
From: cpc@czaeap.UUCP (Chris Cebelenski)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A500 audio problem HELP!
Message-ID: <18be3010.ARN0e17@czaeap.UUCP>
Date: 26 Feb 91 19:22:08 GMT
References: <9102240224.AA18737@cwns9.INS.CWRU.Edu>
Reply-To: cpc@czaeap.UUCP
Followup-To: comp.sys.amiga.hardware
Organization: Very Messy. :)
Lines: 40

In article <9102240224.AA18737@cwns9.INS.CWRU.Edu>, Adam Benjamin writes:

> last night I replaced the stock power supply on my 500 with a small
> XT supply.  The machine works fine with one exception. the audio is trashed
> somehow.  It is all garbled, barely audible with a low humming noise
> all the time.  I put the old supply back on and it works fine, so I
> didn't damage anything, although that's not much consolation.
> I suspect it has something to do with grounding, but I can't figure
> what.   If you changed your supply Email me and tell me how you
> separated the two grounds on the 500 (shield and signal) the funny thing is
> my old supply only had 4 cables the pin for shield ground wasn't even
> connected to anything.??
> If you have any helpfull ideas please drop me a line!
> I am an electronic tech by trade so feel free to be 'technical' {grin}
>    //
>  \X/ Adam B
>
>
> --
>     //			   | "Keyboard not responding
>   \X/ an353@Cleveland.freenet.EDU|  press ESC to continue"
>  Yes, another AMIGA fanatic	   | ^PC logic in action ^^
> #! rnews 1360
> Path: aminet!gdc!portal!apple!bionet!uwm.edu!src.honeywell.c


It also might be RF interference from the power-supply itself... Make sure
your using shielding and that the cables don't run near each other (audio vs
power, that is :-)  )  IBM type P/S's usually run inside a shielded box,
as far as I can remember.

==========================================================================
    Chris Cebelenski        UUCP: portal.com!gdc!aminet!czaeap!cpc
    The Red Mage                : cpc@czaeap.UUCP
                                 // "Amiga - The way REAL people compute"
                               \X/
               Sex, and Drugs, and Rock and Roll-Playing!     (DEVO RULES)
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