NetNews Usenet Archive 1992 #20/NN_1992_20.iso/spool/comp/sys/amiga/hardware/14975

Internet Message Format | 1992-09-08 | 1.8 KB

Path: sparky!uunet!spool.mu.edu!umn.edu!noc.msc.net!uc.msc.edu!shamash!app
From: [e-mail] ( GSD Advanced Packing/Processes)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 1084 monitor problems.
Message-ID: <[e-mail]>
Date: 7 Sep 92 04:35:58 GMT
References: <[e-mail]> <[e-mail]> <[e-mail]>
Organization: Control Data, Arden Hills, MN
Lines: 27

>>It's the flyback transformator. One of the four solder joints that fix it to
>>the board is cracked. You have to resolder it (take care of the high voltage!).
>>
>
>How would I go about avoiding the high voltages.  What I mean is: "What high
>voltage parts should I look out for?"
>I've never taken apart my monitor, so I don't know what to expect.

Even though the monitor may be unplugged (unplug it), the back of the CRT
will hold a charge.  It's like a big capacitor that should be discharged
before you work on it.  I usually connect a wire between house ground
and the monitor's circuit ground (metal shield under circuit board).
Then I make a connection from this point to the back of the CRT under the
rubber cup where the CRT is connected (Poke it down in the hole).  As an
added precaution it's a good idea to momentarily ground anything you're
about to touch in case you didn't manage to discharge it.

Although it is high voltage, it's not real dangerous because there isn't
much current behind it.  It will spark pretty good and give you a good scare
though if you don't drain it.  Work with one hand untill you disharge it.

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Mike Lundberg                    7115 Alta Ave east
[e-mail]                Inver Grove Hieghts, MN 55077
                        home  [phone]
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