68kMLA Classic Interface

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Broken rheostat on Mac SE
Posted by: Ttpilot on 2024-07-06 12:52:51
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
Posted by: codevonlux on 2024-07-06 19:27:01
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.
Posted by: Ttpilot on 2024-07-06 21:54:29
So it is. Thanks. In any case the little adjustment screw is gone on the [checks notes] width inductor coil
Posted by: codevonlux on 2024-07-06 21:57:14
Any photo? Hard to imagine which part you are referring to (little adjustment screw) thanks.
Posted by: Ttpilot on 2024-07-06 22:23:24
Any photo? Hard to imagine which part you are referring to (little adjustment screw) thanks.
This one

IMG_4469.jpeg
Posted by: codevonlux on 2024-07-06 22:34:52
IMG_1072.jpegIMG_1074.jpeg
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
Posted by: codevonlux on 2024-07-06 22:38:20
If the black part is missing in your case, maybe someone in this forum can spare one whole part?
Posted by: mmmlinux on 2024-07-09 08:33:41
You also dont want to use a metal tool because it will affect the inductor you are trying to tune.
Posted by: Ttpilot on 2024-07-09 08:56:20
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
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