Re: jvc hd z56rx5 dark patches
Some sets are easy. You take the front screen and lenticular lens sheet off to gain access. Other sets require removing the back. You might try google to see if anyone has posted instructions for your set. Once you gain access the mirror can be cleaned with a microfiber cloth and distilled water. I recommend getting a can of compressed air to blow as much dust off of the mirror first. If your set has a mylar film mirror you want to be careful not to apply too much pressure to it. If it is glass you can clean it like any other mirror. Also make sure the lens on the light engine is clean.