Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go. http://electronicshelponline.blogspot.com/ Before replacing it, try a reset to this set, and then check.
There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here.
SOURCE: Hyundai LCD TV HLT 3010 Pictue suddenly turns black but has voice
This is quite a common problem on LCD televisions.
It is not a fault you can repair yourself unless you are a competent electronics engineer.
One of the transformers on the inverter board will be the cause as the tend to go open circuit. Being surface mounted adds to the dificulty of changing this item as well.
SOURCE: TV No Picture
My 32D40U would turn on for 5-10 seconds (Please Wait would appear) and the screen would go black. Sound Normal. It would also sometimes do this after running 5-10 minutes. I read somewhere that the inverter board would come loose and lose proper ground. I took the set apart, removed the board, and cleaned up the grounding points. I reassembled using some copper paste on the ground points and LockTite on the screws. I used some contact cleaner on all the connectors going to the board. I noticed two cables that are covered with copper shield tape where too tight at their connectors and repositioned the tape to give them some slack. The problem hasn't occurred since the fix.
SOURCE: TV SCREEN GOES BLANK
Yes your inverter is bad, I have the same problem my set is about 1 and 1/4 years old. Because Olevia makes a terrible product there inverters are attached directly on to the panel, which means they will only sell the inverter along with the panel i.e $700+ to replace + $100 dollars labor if u don't know how to fix it ur self. I am currently searching to find the manufacture that makes the inverters because olevia will not disclose that information. I believe it is darfon, if so the inverter should cost about $150-200 depending. If you dont believe you can fix it ur self ur best bet is try and sell the set for scrap take ur $100 or so dollar and buy a quality product! Oh and dont call there support they will tell 10 different things before u find out this long for seen truth!
SOURCE: TV keeps losing sound
Please try to check the secondary PSU second & sound board electrolytic capacitor with their ESR value too. More info on repair lcd tv, here is the site you must visit: www.lcd-television-repair.com . Hope this help.
SOURCE: Retuning digital TV
You need to use the (what looks like a large sattellite) button to retune your tv.
Some Samsung tv's let you access the button but other models have a "D MENU" button on the remote. Press this button, then scroll down to the icon that looks like a large sattellite. Then scroll across and click on "Auto Store" this will then go through all the available channels
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