My Envision L32W698 LCD TV willnot power on.The red light blinck when it is plugged in and there is no blue light.What should I do??

It's your power supply, you should look closely and see bulging capacitors and they need to be changed.

Yellow Is VIDEO, Red & White is your AUDIO. (Stereo). They should go color to color on the TV's AV input. This is AV, and you use 3 wires to connect this way.
The Red, Green, & Blue, is called COMPONENT, & is ONLY VIDEO, the AUDIO, still must use Red & White. So to connect with Component you use 5 wires, altogether, 3 for Video, 2 for Audio.
Plug them in color to color & choose the right INPUT on the TV, and turn on your input device.

Check to make sure its not muted, if not then your main board most likely has failed

THAT OR YOUR REMOTE RECEIVER IS DEFECTIVE. DO YOU HAVE THE ORIGINAL REMOTE?

Assuming you are using the standard Wii cable which has a red, white and yellow connector, you should connect them to the yellow, red and white connectors on the back. They should be together. The red, green and blue that are bundled togehter are component inputs for hd.

just bought a coby tf-tv2617 our cable company uses a unilersal remote ur2-cbl-cv02 where can i find the code to make them work

have you tried a completely different wall socket altogther/