This article is from the Apple II Csa2 FAQ, by Jeff Hurlburt with numerous contributions by others.
When a composite monitor is known to be okay, a fuzzy/dim display usually
indicates that the video output level is too low. (A too-bright, whitish, faded
look could indicate the output is too high.)
You can adjust video output on a II+ via the small on-motherboard knob
near the Game I/O socket. There does not seem to be any way to adjust composite
video output on the GS. If your monitor has a video input level adjustment, try
changing the setting.
By: Rubywand
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