LG 55LV5500 Trailing Image or Refresh rate issue

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Better antenna.

For your best hearing pleasure you should try using your optical line using a fiber optic line. 55lv5500 has optical out so check if your home theater has optical in also

According to the LG websit, to factory reset your LG 55LV5500:

Press the HOME button to access the Home Menu. Press the arrow buttons to scroll to SETUP and press ENTER. Scroll to OPTION and press ENTER. Finally, scroll to INITIAL SETTING and press ENTER. This resets the TV to the factory default settings and erases all stored channels.

Try a factory rest (settings, options, factory reset) and if this doesn't help contact LG for a repair.

The main digital processor board should be suspected. Contact any experienced service technician.

The device can be configured for various resolutions and color bit depth up to 24b. Additionally there are settings for 60Hz and 72Hz monitor refresh rates. Play with those settings until the image is what you desire. I would fist start with the different refresh rates, that usually fixes blurred images.

First of all, what operating system are you seeing all of this on ? The lines sound like issues that you can have, if the refresh rate is too low, not enough scan lines 'filling in the blanks'. Increase your refresh rate to at least 60 Hz, more if your monitor will take it, but trust your eyes when things look straining, then it's too high. Easy enough to swap out the video card if your system is a desktop ? Somewhere around you is a computer salvage center that sells working, used parts. That would be your backup plan if the refresh rate doesn't fix it first. If this is happening during boot up, press <F8> constantly off & on until a screen appears and asks you if you want to go into safe mode, say yes.. allow it to fully come up, then close it normally on a restart. That will fix most driver issues.

This is caused by a failure of the main board. The failure causes the refresh rate of the unit to be off creating a trailing or ghost effect. This will require a technician to replace that board though. Hope this help.

If the refresh rate is not properly set the monitor may have a wavy or an appearance that lines are going down ... This may also cause a flickering affect.
Distorted or skewed image on monitor. Issue: Distorted or skewed image on monitor.
Cause: This issue can occur from any of the below possibilities.

1. Windows issue.
2. Loose or defective cable.
3. Refresh rate issue
4. Interference.
5. Bad monitor.

Solution: Windows Issue If your monitor has a proper display until it gets into Windows 3.x, Windows 95, Windows 98, Windows NT, Windows 2000, Windows ME, or Windows XP please see document CH000121 for software or setting related issues.
Loose or defective cable You may receive a distorted image when the cable is loose or defective. Disconnect the video cable going from the back of the computer and verify that no pins are bent, burnt or broken. Once verified re-connect the monitor cable.
Refresh rate issue If the refresh rate is not properly set the monitor may have a wavy or an appearance that lines are going down or across the monitor slowly or fast. This may also cause a flickering affect. Additional information about how to change the refresh rate can be found on document CH000558.
Interference A distorted image can be caused by magnetic or other types of interference. Verify no speakers, fans or other magnetic devices are close to the monitor.
Bad Monitor If the above possibilities have been checked it is likely that the monitor is bad. To verify this it is recommended that the monitor be temporarily disconnected and then connected to another computer. This can be a friends computer, a work computer, and/or a computer at a service center. You can also help verify a defective monitor by connecting another monitor to your computer. Note: Connecting your possibly defective monitor to another computer will in no way harm the other computer.

Good Luck/Please dont for get to Rate.Thank You.