When I turn on the Epson v700 scanner, only the little blue light on top blinks but the scanner will not fully turn on and it makes no sounds. It was working fine a few days ago. I never had any problems with it before.

SOURCE: EPSON V700 SCANNER MAKES KNOCKING SOUND WHEN ON BUTTON PUSHED

Hello, Maree.

Make sure both transportation locks are unlocked.

Let me also give you the help site for your scanner where you can check the location of the locks.

http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&infoType=FAQ&oid=66172&prodoid=63056499&foid=69988

http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&infoType=FAQs&oid=66172&prodoid=63056499&category=Products

SOURCE: SCANNER PROBLEM

There are limit switches at both ends of the rails for the scanner. It sounds like one of these switches has failed. The knocking is from the teeth on the drive gears slipping. The unit is not passing its self test. That is why you are getting the flashing red light. If the unit is new, it should be under warranty. Contact the place of purchase to get the steps you need to take to either get it repaired or exchanged. Search the web for a local Epson authorized service center.
Dan

SOURCE: Scanning App won't open.

Actually, it's okay- I just installed the windows drivers under Boot Camp, and that seemed to 'reset' the scanner under OSX.

SOURCE: epson scan with mac os x sofware dosen't work no more

you have to verify the cable. It must be half disconnected

SOURCE: EPSON V700 Photo Scanner

Unplug the power supply from the power port on the scanner then plug it back in after a few seconds and power-up if it isn't already on. This happens to me a lot and this works every time. Frustrating though.