I have a panasonic DMR-ES15EB dvd recorder. It has suddenly stopped reading any type of disc. I have tried to use orginal disc's as well as copy dvd, but it just shows a msg on screeen, disc cannot be read. I also have tried a dvd disc cleaner, but it wont work either. I opened up unit(not disc), n used hair dryer, to remove any dust, should that have been an factor, This machine was playing away well and recording without any hassle. Any help r suggestions would be grateful. Thanks in advance joe