I don't think 7 blinks are caused by fan failure. Since this likely requires a >$1000 checking fee plus $$$ board replacement, I don't recommend getting it repaired outside warranty.
For better black level, get EX750H or X9000F with a VA panel.
For better viewing angle, get FX800H with an IPS panel.
I think it's highly likely that your TV requires board replacement. If you've determined not to pay for parts, then your $1240 is wasted. (Typical fan failure is 11 blinks.)