i've noticed lately that on my PRS-500, the screen is very hard to read now due to residual e-ink from a previous page appearing on the current page. it wasn't great before, but at least it was readable. now, e-ink from the previous page is coming through dark enough to prevent the text from the current page to show clearly. the temperature in socal has been lower than normal lately, so i was wnodering if the lower temperature could be a factor in the sub-par screen refresh behavior.
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