Macintosh Color Display M1212 - Convergence Question
Posted by: smrieck511 on 2026-06-27 11:20:41Whenever I widen the horizontal adjust,
the top and bottom corners move out but the middle of the left and right side stays where it is... like this:
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Is there an adjustment to counterbalance this and get them even?
Posted by: Byrd on 2026-06-27 20:54:08Hi smrieck,
Yes, there is a dial to adjust this distortion, see service manual below, page 31. Before delving in, clean all the pots using electronic solvent spray and allow it to warm up for 20mins+ before adjustments are made.
The Display Service Utility might also help you to know the recommended dimensions for the image so you're not overdriving it.
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• ••••••••••••••••••••••••• READ ME FIRST •••••••••••••••••••••••••••• SUMMARY This file contains important information about this online posting of the Display Service Utility.