The cassette deck on my CFS-45 has been awfully quiet lately. A couple days, it was completely fine, now it's so quiet that I have to turn the volume all the way up to 10 for it to have adequate sound to jam to my beats. It can't be the speakers because the radio is nice and loud. I've cleaned the deck's heads and rollers thoroughly, as I thought the heads were just dirty and that was what was causing quiet sound. Someone suggested a demagnetizer, but I was wondering if there were other ideas I could try to fix the issue.