Use something insulated such as an electrician's screwdriver with a wire connecting it to a good earth, something such as a known good power socket, turned off of course. Unless you were attempting this just after the Mac has been turned off nothing is likely to happen. Then fold back the edge of the anode cap and press on side of the clip so that it comes free of the CRT and the other side should come out as you pull the anode cap away.
The area of the CRT that is most fragile is the neck. The glass is quite strong where the anode cap fits, you really have to be more careful around the neck because it is much more likely to be bumped as you pull out various plugs and cables from the power/sweep board.
For all of the early Macs you can get the technical manuals in .pdf versions (originally Hypercard stacks) at http://home.earthlink.net/~strahm_s/manuals.html
Getting the manuals for both your Plus and your Classic II will help answer many of your questions.
Have fun!
Jim
On Sunday, February 22, 2004, at 03:51 PM, [EMAIL PROTECTED] wrote:
I poked around some of my documentation, it looks like vertical stripes represent issues with the power board or mainboard. Turn the thing off for day and carefully remove the power board (vertical board on the side). Inspect the solder joints to see if any are broken, if so a soldering iron can fix it. Ensure there is no damage to the electrical components themself (leaking or bulging capacitors, exploded resistors, blown fuses, etc.). It is a tedious job, it is easy to miss problems, and the problem may not even be visible upon inspection.
Just be careful while working around a CRT, and don't work around one unless you are comfortable with it and very cautious. A CRT can store a lot of charge -- which is why I suggested waiting a day, so it will hopefully bleed off. CRTs can also implode. I haven't seen the consequences of either, but I don't want to hear first hand information about folklore becoming reality! That said, things like cold joints are easy to fix. I have done so on a few SE and SE/30's myself
Ok, I will take it apart and see what I can find. Do you know about how
long a CRT retains a charge after being unplugged and turned off? If it's
been disconnected for a month or more there shouldn't be any charge left
at all I wouldn't think, correct? I'm just thinking about my Plus and
eventually repairing that.
Anyone have any other ideas/experience with this problem?
------------ Nat Hall [EMAIL PROTECTED] ------------
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