Need a user manual for 42LH30 tv.

It is helpful to name the device, brand, and model and if possible, the year of manufacture. Check the manufacturer's site and/or the seller's site for warranty information. Sometimes, that information is in a user's manual. It is usually a good idea to staple a receipt into a user's manual. You may be able to find a user's manual by Googling for such if you have brand and model number and include user manual in the Google search box.

Pull out the user manual and go through the setup process again. Until you completely learn the system, these things will happen.

If you still cannot get any channels, and the unit appears to be bad, you will need to return it to the seller.

That is the USB service port to be used by service person, not for consumer usage. Please see your user manual. http://www.lg.com/us/tv-audio-video/televisions/LG-lcd-tv-42LH30.jsp

Basic LCD monitor and TV troubleshooting guide:
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

You can download a free manual on link below.

http://www.lge.com/ca_en/support/product/support-product-profile.jsp?customerModelCode=42LH30-UA&initialTab=documents&targetPage=support-product-profile#

Good luck an please rate 4 thumbs for free answer

Ur power supply board.Transformers have have high voltage gap.This problems must take the tv aparts put some glue arond the transformers,sometime solved this problems,or must replaced all the trnsformers make the humming noise.Brand new tv take it back,where u bought it get a replacement or call the Manufacture help to fix the problems or replaced the part that cause the problem.

There is AUDIO Line out RCA jacks on the back, not speaker level output. You can get manual here: http://tv.manualsonline.com/manuals/mfg/lg/42lg50_1.html

If the unit is under warranty, I would see if I could get LG to replace the LCD Panel. If is not under warranty I would try to live with it because of the cost to replace the Panel.
I hope this helps,
Skyassoc

Hi,

You can download the required manual from:

http://www.lge.com/us/tv-audio-video/televisions/LG-lcd-tv-42LH30.jsp

On the page which opens, click on the Support button and download the manual from the next page which opens.

Hope this solves your problem. Thanks.

Try Retrevo.com

You should be able to find the guides on HP's website. Click here for the site.