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| Macintosh Classic II - screen adjustments |
Posted by: macintosh2002 on 2022-10-06 13:09:16
Hello,
could some let me know how to adjust my Classic II screen? It should rotate a little bit counter clockwise. I think this should be done by the plastic rings on the backside of the CRT, but I don't want to break something. Is there a manual / description to adjust the screen? Cut-off, width, height can be done with Larry Pinas Repair and Upgrade Secrets, that's not the problem.
Thank you. |
Posted by: SuperSVGA on 2022-10-06 13:39:39
You can use the official service manual - https://tim.id.au/laptops/apple/legacy/classic_ii.performa_200.pdf
Specifically you would want the procedure at PDF Page #107, or Page 18 of the Adjustments section. |
Posted by: rollmastr on 2022-10-09 01:01:52
You will have to loosen and rotate the Yoke of the CRT. Beware of the high voltage and stuff. |
Posted by: macintosh2002 on 2022-10-09 04:49:11
Thank you, that was easier than I thought, it is much better now! |
Posted by: 68kPlus on 2022-10-10 19:49:04
*flashback to me trying this and cracking the CRT neck*
Luckily I don't think it was me, I think it was already super weak due to being shipped 1400km+ |
Posted by: jessenator on 2022-10-10 22:55:28
If you have the means, I highly recommend a 3D printed set of channel lock pliers. After you loosen the screw clamp on the crt yoke, you can rotate said yoke while the Mac is on to get the position just right. Just don't grip it on the coils! Hopefully you don't have to, but they can also be used on the beam magnets.
All the same, do this at your own risk!! Super high voltage is no joke. I wore an insulating glove on top of all that just because. |
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