Broken rheostat on Mac SE

[Ttpilot]

The display on my SE sits at the right edge of the screen. I was going to shift it left and discovered the little adjusting screw in the rheostat is missing. Is there a way to fix that short of replacing it? The display is completely usable as is, but it looks off center

 

[codevonlux]

Shifting image on the CRT for SE is done by adjusting/rotating the metal tab on the neck of the tube. Width adjusting is by core of an inductor coil. None of them is a rheostat.

 

[Ttpilot]

So it is. Thanks. In any case the little adjustment screw is gone on the [checks notes] width inductor coil

 

[codevonlux]

Any photo? Hard to imagine which part you are referring to (little adjustment screw) thanks.

 

[Ttpilot]

Any photo? Hard to imagine which part you are referring to (little adjustment screw) thanks.

This one

 

[codevonlux]

As you can see in the photo. There is no “screw” in the coil. You can just use a hex tool (you must not use metal tool when powered on otherwise the tool will get hot and burn your hand). I normally use a trimmed q-tip for this adjustment. You will notice the black part I marked in the photo to extent in and out the red wire coil. Hope this helps

 

[codevonlux]

If the black part is missing in your case, maybe someone in this forum can spare one whole part?

 

[mmmlinux]

You also dont want to use a metal tool because it will affect the inductor you are trying to tune.

 

[Ttpilot]

You also dont want to use a metal tool because it will affect the inductor you are trying to tune.

I have a non metal tool. Unfortunately, there is no screw/thingie to adjust on that particular control