If it is brand new, and under warranty period, it will be best to replace this TV. Check the site linked below. There are some details about these type of faults to Sharp LC series TVs. Blinking codes are also described in detail there. Click this
link.
View it in "
Timeslide" or
"Flipcard" option, which can be selected from the drop down box menu by
the [
Sidebar] tag, at the top left corner of the display window. You can also click the [
Home] tab to
see the latest updates. It will make search easy. There are more than 1350
posts to different brand TVs now. Pull up older posts there or make a
search
by typing in the brand name of the device in the "Search Box", at the top
right of the display window