Look for cold solder joint in the power supply module, the easiest thing to do is to resolder all the connections on the power supply board. Also chek the DC outputs of the power supply.
http://s807.photobucket.com/albums/yy352/budm/Westinghouse%20LTV-32W1/
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
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps
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