Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!usc!henry.jpl.nasa.gov!elroy.jpl.nasa.gov!gryphon!jdm
From: jdm@gryphon.COM (John Mesiavech)
Newsgroups: comp.sys.amiga
Subject: Re: problems with an amiga 500
Summary: The problem is NOT thy Amiga!
Message-ID: <19335@gryphon.COM>
Date: 1 Sep 89 07:00:08 GMT
References: <8908311544.AA28591@jade.berkeley.edu>
Reply-To: jdm@gryphon.COM (John Mesiavech)
Organization: Trailing Edge Technology, Redondo Beach, CA
Lines: 48

In article <8908311544.AA28591@jade.berkeley.edu> RICK@QUCDNAST.BITNET writes:
>
>The following (slightly editted) was sent to me by a local friend of
>mine. It seems to have stumped the service type at the local dealer. If
>anyone has an inspired suggestion to make, his address is
>nosworth@qucdn.bitnet
>or
>nosworth@queensu.ca
>----------------------------------------------------------------------
{long description of bad monitor symptoms deleted for brevity}
 
Sir;
 
Tell your friend that his problem is NOT in his Amiga.
Repeating, NOT in the Amiga.
 
Those symptoms he had when the problems first started are diagnostic of 
a bad main controller board in the MONITOR.  Most likely, when the
problems caused his system to die, a transistor in the monitor's controller
board blew and took the Denise with it, by backlashing through the 
monitor cable.  Th secondary problems he had after getting the Denise
repaired (and yes, that dealer WAY overcharged him....Denise chips are
$65 from CBM, quantity one, unless CBM changed price again.)
 
Again, the secondary problems sound like something from the monitor
putting tolerable-but-just-barely signals into the video port.
 It almost sounds as if something enabled XCLOCKEN...but the 1080
monitor cable doesn't have that particular pin wired.  Something in the
connector, maybe?
 
I would advise your friend to check his system with another monitor and cable.

It may solve his probblems (or ast least locate 'em)
 
John



-- 

0-=-=-=-=-=-=-=-=-> All disclaimers apply; I didn't write this <-=-=-=-=-=-0
|                   ----------------------|-------------------             |
| "I want a New Duck                      |  John Mesiavech                |
|  One that won't try to bite             |  net.soldier.of.fortune        |
|  One that won't chew a hole in my socks | {backbone}!gryphon!jdm         |
|  One that won't Quack all night"        |    Go Purdue! (by req)         |
|  Weird Al Yankovic, "I Want a New Duck" |                                |
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