Path: utzoo!attcan!uunet!aplcen!unmvax!ogccse!blake!milton!uw-beaver!uw-june!gordon
From: gordon@cs.washington.edu (Gordon Davisson)
Newsgroups: comp.sys.mac.hardware
Subject: Re: screen flickers on a plus
Message-ID: <9849@june.cs.washington.edu>
Date: 17 Nov 89 09:47:13 GMT
References: <4963@elroy.uh.edu>
Reply-To: gordon@june.cs.washington.edu.cs.washington.edu (Gordon Davisson)
Organization: University of Washington, Computer Science, Seattle
Lines: 20

In article <4963@elroy.uh.edu> CHEE77@elroy.uh.edu (Fred Schulz) writes:
>What would cause the screen to flicker on and off. After my plus has
>been on for a while, tapping the sid will cause the screen to go off, or
>on. I sure don't want to take it to a dealer to have the analog board
>replaced. I've heard mention of a cracked solder joint, but saw no
>obvious suspects when I opened it up.
>
>Any suggestions? Thanks.

The solder joint you're looking for is on the connector for the cable to
the motherboard.  It's a 10-pin connector near the middle of the analog
board.  It has 9 pins in a group, then a gap, then one by itself (toward
the front of the machine).  The isolated pin is almost certainly your
problem.  The cracks I see here are usually very thin and can be hard
to see, especially if the solder is shiny.

--
Gordon Davisson
Westwind Computing	(206) 632-8141
4518 University Way NE, Suite 313, Seattle WA 98105