The Macintosh Color Classic was the color all-in-one Mac in the early 1990's

5 Questions View all

Do you sell Monitor Adjusting Tools for the Color Classic

I'm in need of the plastic Monitor Adjusting Tools for the Color Classic.

Do you sell these or can recommend where I can obtain a set?

Answered! View the answer I have this problem too

Is this a good question?

Score 2

Comments:

iFixit does not sell it. I don't have a any line on another source, but I'll keep my eyes out.

by

The reason for the nonconductivity requirement is that the control is actually a ferrite core inside an inductor carrying large alternating currents. The AC field would induce large currents in a conductive tool, and make it get incredibly hot very quickly, to say nothing of invalidating the adjustment. At the same time, the increased strain that this places on the circuits could cause damage. So, wood or plastic it should be.

by

Add a comment

4 Answers

Chosen Solution

CRT discharge tools are not in high demand, so it isn't easy to find one that's designed for it. While this is very much the case, you can use a flathead screwdriver and a wire that has alligator clips on both ends that also uses a heavy wire gauge. The big requirement is it has to be able to handle ~15,000 volts or more, which means the wire gauge needs to be on the thick side. Yes, that number is not a lie. The average desktop CRT can hold ~15,000 volts or more in some cases. Larger CRT's can hold ~25,000 volts in some cases. This is enough to severly injure you, or potentially even KILL you.

I don't exactly think you should use a screwdriver and alligator clip test lead in place of a discharge tool, but it does work in lieu of the actual tool.

The big thing is you use an electricians screwdriver, just in case something goes wrong. It isn't required but it can be the difference between dying or staying alive if something goes really wrong. While it isn't strictly required, it may also be a good idea to use gloves that are electrically isolated if you want to be extra safe as well.

The big thing is to find the service manual to figure out what each adjustment does. Apple does not label the adjustment points on their CRT's so if you adjust the wrong one, it will likely never be right again, even if you spend hours trying to fix it.

Adjustment is fine to compensate for wear but if you find yourself doing it a lot, the CRT is tired and needs to be replaced. I do not recommend replacing it. It's going to be better to part the system out and scrap the leftover parts.

Was this answer helpful?

Score 1

Comments:

The reason for the nonconductivity requirement is that the control is actually a ferrite core inside an inductor carrying large alternating currents. The AC field would induce large currents in a conductive tool, and make it get incredibly hot very quickly, to say nothing of invalidating the adjustment. At the same time, the increased strain that this places on the circuits could cause damage. So, wood or plastic it should be.

by

Add a comment

no,not that i've seen.They should.

Was this answer helpful?

Score 0

Comments:

not a lot of call for that tool for the last 15 years or so ;-)

by

Add a comment

I have color classic but it is in mumbai india if u want it i can send it...see it could be possible....

Was this answer helpful?

Score 0

Comments:

How about ordering this kit: Alignment Tool Kit

by

Add a comment

©2000 Thomas H. Lee, rev. May 31, 2007; All rights reserved

5.2 Height and Width

If you want the screen to provide true WYSIWYG so that 1” on the display corresponds to 1” in real life, then its dimensions must be precise, or 4.75” x 7.11”, to be more exact (that’s 342x512 pixels at 72 pixels per inch). Unlike the other four adjustments, adjusting the width requires a hexagonal tool made of a NONCONDUCTIVE, NONMAGNETIC material. You can get these tools at places like Radio Shack, where a suitable one is sold as a tuner alignment tool. You can make a serviceable one out of a whittled down wooden chopstick or some similar material. If you use a cheap chopstick, you don’t have to do much work at all. Cheap chopstick wood is soft, so tapering it enough to allow gently jam- ming it into the core of the control is usually good enough. It will conform to the shape of the core well enough to do the job.

The reason for the nonconductivity requirement is that the control is actually a ferrite core inside an inductor carrying large alternating currents. The AC field would induce large currents in a conductive tool, and make it get incredibly hot very quickly, to say nothing of invalidating the adjustment. At the same time, the increased strain that this places on the circuits could cause damage. So, wood or plastic it should be. Once you have the tools, you can save time by tweaking the height to 4.75” and then adjusting the width until diag- onal rows of raster dots are at right angles to each other. A piece of paper or a floppy disk or any other handy object with right angles will do as a good template for this purpose.

If you don’t care about WYSIWYG, then just making the dots at right angles is good enough to preserve proper aspect ratio.

Was this answer helpful?

Score 0
Add a comment

Add your answer

applguy will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 3

Past 30 Days: 19

All Time: 2,122