The TV is about 6 years old and it will work fine for about 10 minutes then it must heat up or something and the picture goes blank

Pictures: http://s807.photobucket.com/albums/yy352/budm/WESTINGHOUSE/Westinghouse%20LTV-32W1/

Check the caps and solder joints in the power supply module first.

Basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

The tv LCD screen panel go black blank,but dose the tv still have audio sound of the program?Yes?The tv have 1 or 2 a long boards that are called a LCD inverter boards.It is dying and require replacement.These 1 or 2 a long LCD inverter boards only job are to provided a backlight for the tv LCD screen panel to produced a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 1 or 2 refurbishes long LCD inverter boards for the replacement.