Says a blinking green light is "aging/self test". Try holding down the middle button while not connected to the computer. Maybe it will work again.
If you can't get it to work,
Follow my howto on how to free download Sony DAS/Sony WinDAS/Sony Win DAS, un lock it, and use it.
http://www.geocities.com/gregua/windas/
I cover how to build the interface cable, you may already have such a cable as it is common for cell phone data cables, electronic organizers, etc. You can get everything you need for 15$ or less on sites like jameco.com . No need to remove the monitor cover!
Should be able to get it to boot up again, or see what went wrong in the failure log. You could clear the failure status and it'll probably work. There is an "aging/self test" procedure in windas.
Not sure what you mean by chirping, there are more serious blinking patterns (amber in color) that mean ("HV or +B","H Stop or V Stop or correction capacitor","ABL")
So you could rule those out.