Hi,

Here is a link to the Ifixit guide on how to dis-assemble your tablet. It is helpful as it shows how to gain access to the LCD screen so that you can replace it.

RCA Voyager II RCT6773W22 Disassembly

New LCD screens are available online from places such as Amazon and Ebay.

Here are some examples. You may find others that suit you better, just search for RCT6773W22 LCD screen replacement part for results

https://www.amazon.com/Replacement-Displ...

http://www.ebay.com/itm/USA-New-LCD-Disp...

Hopefully this is of some help.