I have an Insignia tv model NS-27LCD manufactured Oct.2006. How do I get the captioning off the screen?

Here is a manual for a 42" Insignia. Hopefully it's similar http://insigniaproducts.com/cms/documents/NS-42LCD%20UM%20EN_SP_FR.pdf
This one says the closed caption settings are in the "system setup" menu.

Power supply module will be the first place to look, it can be from bad DC filter caps (leaking/bulging top, high ESR), blown main AC fuse, etc.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

This television, appears to have had a failure in the mainboard. This is the board that controls the video functions and sound functions. The unit should be taken or sent in to a service center for testing and servicing. The service center will have all the correct service information to determine the problem for you. You can call Insignia customer support at this telephone number 1-877-467-4289. You can also got to the customer support website at www.insignia-products.com. Go to the support section and ask them for help on how to get service for your television. I hope this information helps you with your problem.

In about 90% of the time the power supply is defective if the TV fails to power ON.
I repair these power supplies, if you need further assistance write to [email protected]

Both power supplies are supplying the same voltages to the circuits but in order to use the one from the NS-27LCD 27" you will need to change the wiring configurations to make it work for the LCT2715..
I could repair the power supply from the LCT2715 for under $90.00 including parts, labor and shipping it back to you.
Let me know if you require further assistance.

Caption mode or text mode . Need Turn off.

found caps in power supply bulging so i replaced all electrolytes in power supply but TV still doesn't work when i hit the power button the power supply just ticks.

I have a 26" Insignia HD-TV and just found out the cable remote code (to connect TV with the cable box) is 0463.  If that's not what you need, try calling Insignia's help line at 877-467-4289

I would replace the remote, you can buy an OEM remote at the link below. 1 800 Remotes