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From: bryce@hoser.berkeley.edu (Bryce Nesbitt)
Newsgroups: comp.sys.amiga
Subject: Re: Monitor popping
Message-ID: <21593@ucbvax.BERKELEY.EDU>
Date: Wed, 4-Nov-87 04:35:20 EST
Article-I.D.: ucbvax.21593
Posted: Wed Nov  4 04:35:20 1987
Date-Received: Sat, 7-Nov-87 09:58:22 EST
References: <4754@burdvax.PRC.Unisys.COM>
Sender: usenet@ucbvax.BERKELEY.EDU
Lines: 30
Summary: Re: My monitor goes POP and crashes my machine.

In article <4754@burdvax.PRC.Unisys.COM> wpl@burdvax.PRC.Unisys.COM (William P Loftus) writes:
>
>My monitor goes POP (sounds like an electrical discharge), and
>the screen jumps.  In addition, My machine will crash once in a while 
>(quite a lot actually) when it POPs.  Is my monitor going bad? Is
>there anything I can do, before bringing it into a dealer?

Dust has accumulated inside your monitor.  This builds up on the
high voltage lead to the tube and will arc to a nearby metal
bracket.  The arc can most certainly send jolts that could
affect the computer.

The local repair Guru, Bruce Takahasi, finds this a common problem
with certain reported hard drive crashes, especially if the 
four daughterboard PALs have not had their grounds tied together.

(The above comments apply mostly to the 1080 monitor, and the PAL
chip ground is specific to the Amiga 1000)

The suggested fix is to have a TV tech dust out the monitor and
re-route the HV lead(s) away from anything they could arc to.
Do it yourself only if you know how to take proper precautions
against those very same high *latent* voltages.

|\ /|  . Ack! (NAK, SOH, EOT)
{o O} . bryce@hoser.berkeley.EDU -or- ucbvax!hoser!bryce
 (")
  U	"[The Amiga 1000 can display] up to 50 overlapping windows
	simultaneously." -Amiga Advertising, Spring 1987
	(Yeah, thats it... *understate* the machine's capability :-( )