It sounded like a firecracker and screen went blank

Sounds like you have a loose or bad cable

back light problem.

I had same camera like yours, and same problem. I heard the same sound (firecracker) a while ago. Are these solution really work at your camera? Please let me know if its. Thanks in advance!

You have blown parts, either the caps or the main switching power supply MOSFET.
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
Parts: www.shopjimmy.com

Don't know which boards Z or Y have dead capacitors pop open,take ur tv aparts check boards that have pop opens parts or burn marks on them.Replaced that board will solved ur problems.Tries Shopjimmy.com,Ebay.com to buy refurbish boards for the replacement.

Wharfedale LCD3210HDAF this tv was working fine the night before .. when i turned it on in the morning the screen came on then instantly went blank .. although the sound is fine i am unable to get any on screen including menu an volume information and of course can any one help ??

Do you still have sound? Can you see light at the back of the set when the screen is blank -if so the bulb is ok and you've just lost video.

we had a similar problem on our 40 inch samsung , the screen went black but we could still hear sound on ours it turned out to be the main board not the inverter like some people liked to think thanks

Contact us to join our group who is taking action for the same issue. [email protected]

This sounds like your power transformer has went out and needs replaced...This could also be the flyback converter (part for flyback is around $70.00 US)