Not sure if I'm posting in the right spot,but I have a 4600 and 4300-300 that I bought new and both have problems not shortly out of the box with the echo (about 2 years ago) and put them up on the shelf. Does anybody know if there's a fix for this and if they have fixed the problem on the newer ones or was I just lucky and got the special ones....................please help,that's just a waste of money setting there.