Want to use Panasonic SA-HT740 for TV sound

Main board would be where I'd start

TAKE THE STEREO AUDIO OUT FROM PANEL AND PLUG INTO AUX ON HT.
OR
USE HEADPHONE OUT TO RCA. THEN YOU CAN CONTROL TV VOLUME TO ADJUST = TO HT FUNCTIONS.

Have you selected HDMI input on tv?

That is unusual. HDMI are usually auto-sensing. Modern TV sense when a cable is plugged in

TC-55LE54 use the digital audio out

The amplifier needs to be whatever you used for the TV, (EX. TV, DVD, Aux) in order to play sound thru the amplifier.

Try unplugging it completely for 30 seconds to 1 minute. Plug it back in. If it still won't come on, it's likely taken a power surge and popped a fuse or power supply, which means a trip to the service center.

I have an old Toshiba TV and was going to replace it with a new plasma because it has suddenly (the week of July 19, 2010) lost color. It has only green and blue tint. Changing the "tint" on the menu didn't help. The color comes and goes relative to nothing that I can measure, such as how long it is turned on, etc. Reading other complaints from owners of Plasmas, I am thinking it is cable related. I have Charter Cable. Playing a DVD, I have to readjust the tint back to normal. Hope this info gives clues.

i have the same problem on my tv and i call to bestbuy since the tv is only 2months so still on the manufactures warranty the problem is SC Board shorted, and they replaced the sc board.

I have same problems please If you know anything help me
my email adress
[email protected]
thanks