I have a panesonic TV model pt-53x42f. Will not turn on. Power light is blinking 3 times then nothing for ~10 seconds then blinking again. Unplug, then plug back in abd it will turn on for about 1 second. I can't tell what is on the screen, then goes off and power light starts blinking again. "

Seems to need repair. Here's a link to a post for a similar model and what was done to fix it:

http://www.fixya.com/support/t162778-panasonic_pt_47wx53_no_power_3_blinks