In reply to Dingerbell:
Replacement screen made of glass available from Russia. I believe you have to use hairdryer to soften adhesive and prise off existing screen. With glass screen may end up better than new.
Never used company or seen product but looks to be worth a try.
Enter Garmin Gpsmap replacement screen in search engine and you will find Ebay listing.- was not allowed to post address.
Post edited at 22:46