God knows
You can find a screen online and replace it your self which may be complicated for some to do or you can find a local screen repair shop who has reasonable prices.
If it is just the screen that is damaged, your local glass shop can replace it.
There are a few places that you can shop online to find replacement parts for a projection screen. One of them is 'Projectorcentral' which is actually a Mitsubishi store, and the other one is called 'partstore'.
See the related link below.
The only way to repair tom-tom LCD screen if it is cracked is by replacing it. You should find a screen that is compatible as the replacement.
you can get them in any good games stores
There are some online shops that one can find a suitable 15 inch replacement screen. The online shops include Sears, the Apple Store, Amazon, eBay, Pronto, etc.
Time for a replacement screen. You'll have to find somewhere that replaces them, or if you're feeling adventurous, order a spare screen and do it yourself.
You should be able to find replacement partsfor your screen door at your local Home Depot. You can also try Loews,although Home Depot has a much wider selection.
Search on Amazon.com or Ebay.com to find inexpensive parts for repairing your screen. Best Buy may also have the part, and their Geek Squad can install it for you.
There are many places where one can find Roland Amplifiers. A good place is the website "Amazon" or the website "eBay" to find Roland Amplifiers online.
You need a replacement screen? EBay, I guess. There is also a site called DX.com.