High pitch whistle then died

I've had my 9300 for around a year and a half with no problems at all. Yesterday, I was charging up and then noticed the high pitch whistle sound (for the first time with my own phone) and noticed my phone had died. I've popped the battery multiple times, even trying a second battery with no luck. Each time I place the battery in (without being plugged in to the charger) and I get the high pitch sound for just a second until the battery is completely in. There was also no electricity surge or anything like that with the plug and charger.
Can it be saved easily? 

Hi LashKelly,
Try backing up your device via the BlackBerry Desktop Software and performing a clean reload of your device software. http://bbry.lv/bpv7DT Make sure to test to make sure the whistling issue is no loger there before restoring any data from your backup file.
Hope this helps.
-FS
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