Guys, Recently i got LG 22" LCD TV. It has VGA port and HDMI port. When i connected my CPU cable toLCD via VGA port it didn't show anything, :"( i checked input MENU on remote then it shows only 4 option:Component in, AV, TV, HDMI plz tell me why there is VGA port on TV, how can i connect my PC with this TV?And what is HDMI port? Can i connect my PC via HDMI port?

SOURCE: Connecting laptop to LG Plasma via vga cable

you should have a button that you have to press to get it to switch over, on mine i have to press and hold the Fn key then press the F4 key might not be the same on yours but you should have a f something key that has what looks like a little screen on it that is to switch the output if that does not work try hooking up your laptop just like before, and then restart it. good luck

SOURCE: LG 37LC7D Connect to VGA from a PC

Your right. I just had the same "Invalid Input" issue as well and it completely relates to the resolution compatability with any VGA or HDMI connection. Check the LG website for the online manual if you don't have it and see the section on RGB-PC cable. There is a table that incdicates the Resolutions the LG product is capable of displaying.

Thanks for the help.

SOURCE: LG 42LC2DB LCD TV Flickers when Ps3 is connected via HDMI port

Make sure you have the PS3 set to the correct frequency for the TV. Many cannot accept 1080p / 24fps etc.

Try different settings.

I hope this helps.

SOURCE: I Just connect My pc via 15 pin RGB cable to LG

You probably need a audio cable that runs from the pc audio out to the TV audio in. Radio shack has them so do a lot of hardware store and best buy.

SOURCE: Panasonic TH-46PZ85U Plasma TV

Symptom:
TV shuts off unless all the input (phono and HDMI) cables are disconnected. The
symptom may be intermittent.
Cause:
There is an abnormal AC voltage entering the TV from one of the input cables or AC
outlet.
Remedy:
Follow the Testing procedure to determine if there is a problem external to the product.

Concept
Constant symptom
If the TV no longer shuts off when all input cables are disconnected, then one of the
input cables is introducing abnormal voltages into the TV. Panasonic Plasma TV sets
have 3 wire AC plugs.
As a result, abnormal voltages introduced into this TV will cause the TV to shut off for
protection.
Intermittent symptom
If the abnormal input voltage is borderline (marginal), the TV shut off symptom may be
intermittent. However the cause may still be detectable with a voltmeter.
Protection Proof:
Release the protect mode - the TV has to be unplugged to reset this protection circuit.

Threats from the HDMI input:
Excessive voltage from an HDMI cable connected product will activate the Plasma TV’s
protection circuitry. Placing an isolating / buffering connector (sometimes called a voltage
conditioner) between the TV and the HDMI input cable often solves the problem.
Testing -
Unplug all the HDMI inputs from the TV. Turn on the TV. Plug in the HDMI inputs one at a
time. The cable that causes the TV to enter the protection state is connected to the product
that has the excessive voltage (and signal). Avoid connecting this product until an isolating
connector is found.