I have a 26in lcd zenith lg tv and it has a built in tv guide channel and it won't pull up,it just has a small picture in the top right hand corner but the list of channels and tv guide menu does not pull up. all i get is a black screen and the small picture in the top corner as stated. please if any info let me know i'm at a loss
It's possible there is a flaw with your TV but more likely the listing information is being blocked. Many cable companies do this, likely another reason to force you into buy/leasing their equipment. This should not be a problem with OTA.
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If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
Did you try to call LG/Zenith customer support and see if they can help you? If not find your nearest LG/Zenith service center (not Best Buy) preferably a small service shop to see if they have a service remote to unlock it
A cablecard is the size of a credit card use to view or record digital cable channels on a digital recorder,personal computers and tv s without the use of outside equipment like (stb) set top box provided by your cable company, below is a picture of one hope this helps.
After purchasing a "service remote" and then buying a new "Main Board-Analog" which didn't fix the problem, I spoke with tech support who then emailed me an "EPK" file. Basically the computer board inside the television needed to be updated since this whole digital conversion is happening.. However this incident has given me tremendous knowledge of what to do and how to troubleshoot and how to reset my own TV with all the hidden menus that you never knew you had. Don't be tricked into buying a mainboard or even paying a diagnostic fee. If your TV GUIDE screen goes blank and all you see is a small channel preview screen in the top left corner, chances are all you need is the EPK file update. I received the update file in my email, I downloaded it to an SD card, inserted the SD card into my 32LX1D LG LCD TV and it did the rest. It was too easy. Most newer LG TV's are coming with a "SERVICE USB" so you can attach a "jumpdrive" or some other storage to it. These so called "Authorized Service Centers" are a hoax. WHen you bring your TV into them they charge you a "diagnostic fee" ranging from $50-$150 just to diagnose it, then they tell you that that can also be applied to the cost of the repair. All the service center does is call a special priviledged tech support 800# for LG to find out what to do. I've replaced and removed my own Main board. You gotta learn the game people, its all a big game to keep the revenue coming long after the sale of the TV. Which is why nowadays automobiles are manufactured with parts that were made to break intentionally to keep bringing you back.