Summary: When I tried this out there was a buzzing sound that was picked up by the microphone and therefore it would not playback withou a buzzing sound. I sent it off to Sony, as you said it had a 90 day warranty for labor and a one year warranty for parts. I need a copy of your original invoice when you purchased this to send them or the cost to fix it is $269.00.
Summary: Mine lasted 2-1/2 years. Then suddenly one day the screen went black while recording. Then it would work for a while but the colors were distorted, then it would just black out again. It turns out this is a very common "Black Screen of Death" that is reported all over the internet and affects this model as well as other Sony camcorders. There is a class-action lawsuit regarding the affected Sony models.
Summary: The camcorder was purchased as a Christmas present. We took it on a cruise in early January. After only a few days it gave us a moisture message and stopped working. Sony claims we dropped it in water and wants over three times what we paid for the camera to repair it. We did not drop the camera in the water, we do not have films of our vacation. We are just out our recorded memories and $300. We will never recommend a Sony product to anyone.