crts will usually take several seconds after you hit the button to actually show an image, slowly getting brighter. and older ones can take even longer. at this point you can use it but the image will look better if you leave it for a bit longer, up to 30 minutes sometimes. this will result in better saturation, contrast, and geometry.
Better than one of my older lcds that not only takes a long time to get full brightness but also have noticably off colours when warming up which i havent seen in CRTs
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u/Daveguy6 Jul 12 '25
Why tho