I have a Sceptre c325b-185rd that started fading to white. Logo shows on power up, then fades to white over 3-4 sec. I attempted to take it apart to check capacitors, etc, but cannot get the back panel off! I removed all of the screws, but there is a seam across the lower/middle of the back panel that I cannot figure out how to get loose. Checked Youtube for teardown videos, but no luck. Any suggestions would be much appreciated!