I have a 42" HCT HPP-42HCB TV S/N 42HDT9MUH046 no picture but has sound

0039,0031,0033. Try these codes. If you wish to get more details; check the sites linked here. It has set-up code list & set-up procedure to many popular brand remote controls. Common set-up codes to check with TVs and other devices are given, in the order of the "device's brand name list" in alphabetical order. Pull up older posts. Surf the site with patience. Surf the sites by type in the brand name to your set, in its search box.
http://electronicshelponline.blogspot.com/
http://remotesearch.blogspot.com/
http://electro-medical.blogspot.com/
http://electrohelponline.blogspot.com/

If code not found look to see if this remote has a search mode where every possible code it has can be tried one at a time---it may just not have the code and in that case you are out of luck.

same thing with mine same model same issue, then it stays with the green light as it would be if it was on and working, and wont let me turn it off then, with no pic left or sound, its killn me, let me know what you find out!!!!

I see this sort of thin often in my shop, however unfortunately, this is only a SYMPTOM, the "Cause" unfortunately, can be, and are Many and Varied. usually it has to do with the Voltages being wrong, often involving the Power Supply, and High tension section. There is no realistic way to repair a TV of this sophistication, in house.The tools, equipment and the need for a service manual and experience to repair is considerable. Plus when faulty, a TV can cause a fire or an explosion, so it is owed to all, that it be professionally attend to, as if a repair was done, incorrectly and there was such an event. it would be very bad for the repairer. It is my professional recommendation, that you get a free "Quote" for a repair. This way you can make an informed safe decision to repair or replace.

Yes, Use LG code for your tv remote control

If u buy this new,u got a lemon,This prob.is a
burn in use equipment,shouldn't cause this prob.for at lest 2 years.This is a comon prob. with a video Wharping heat exspand and contrast circuit board.

for your manual just click at google .com and then manuals. for your remote you can buy the universal on best buy walmart or frys