When first in evidence, short of following Apple instructions (found via simple search online)
• How to clean your Apple products - Apple Support And if you had tried only their approved
cleaning methods. ~ If that didn't work, you'd then take unit to Apple Store for an evaluation
& repair estimate by Genius. Now there's not much else, except ask LCD replacement costs.
Alcohol had been considered a no-no for some time. With older soft-surface LCD panels
and the earlier coated glass, which is remarkably resilient to most careful handling. ~ My
2003-2005 Macs with soft-surface LCD displays are in great condition. Newer glass, too.
A clear water-dampened soft cloth (microfiber, etc) is cited for use by several LCD brands.
Cleaning kits and other products from various sources may be used; some were helpful
to make the defective surface more usable after cleaning and then display was covered.
And to clear off smudges that one may mistakenly try solvent to remove, are available.
Examples include specific use with prep for 'application of protection layer' over screen:
Photodon.com: Kit Compare Chart
There had been a Support page at Apple online that showed some costs of MacBook repair.
But their 'inspection evaluation' process can suggest the costs to replace a defective panel.
