68kMLA Classic Interface

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Macintosh Classic lines in screen (analog board)
Posted by: 68kPlus on 2024-03-04 22:12:23
Hi guys,

I've got this Mac Classic which I've finally got a new CRT for and have recapped the capacitor-plagued board. It looks good now and is working mostly,
aside from this issue where (no matter the brightness) I can see the raster on the screen.
I believe it's the equivalent of the U1 chip being bad on an SE, but I'm not sure what to do in this case.
I've attached a video of the problem, so if anybody knows it would be greatly appreciated.

Thanks!
-68kPlus
Posted by: bibilit on 2024-03-05 00:06:57
Yes your issue is on the brightness side
Posted by: 68kPlus on 2024-03-05 00:18:17
Yes your issue is on the brightness side
Any idea how to fix it?
Posted by: 68kPlus on 2024-03-05 00:23:45
Oh and the floppy ? icon is "rolling", where its just going up and down.
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