MY LG TV model 60UB8200 has sound but no picture. The remote buttons (menu, settings, input, channels) don't make anything appear on the screen

go to the Menu and you should find it.

If the TV displays the menu or Smart Hub when you press the button on the remote - the TV is on, it's just displaying a black screen. Change the Source on the TV to another input. See the page on Samsung TV has No Picture for more troubleshooting steps.

Depending on the TV, there will be a Jog Controller or TV Control Stick that will allow you to access the TV menu and change the source. Use the control on the TV to select an option - toggle it left or right to see if anything appears on the TV.
If the control menu appears on the screen, the TV is on but not displaying any input. Check the connections or change the input source on the TV. If the controller button works on the TV, but not the remote, check the batteries in the remote control.

Unplug the TV from the power source and leave it for a minute or two. Reconnect the power cable directly to the wall rather than a surge protector. If the TV Standby light appears - the TV is receiving power. If the Standby light still doesn't appear, please get in touch to organise a service.

UNPOWERED INPUT DEVICE

Check to make sure the device you're trying to use with your TV is plugged in and turned on. While it may seem like a silly oversight, it is possible that you switched on your TV and didn't actually turn on your DVD player, gaming console or whatever device you're trying to enjoy. If you tried to use a remote to turn on the device, check that the batteries still have a charge and turn on the device using its built-in power button.
TIP The problem may be your input device itself. Check your TV with other devices and see if it displays them properly. If it does, contact customer support for your device for more detailed troubleshooting instructions

WRONG INPUT CHANNEL

Make sure that your TV is on the right input channel for the device you're trying to use. When your TV isn't switched to the right channel, no visual or audio input from the device will display on your screen or through your speakers. Turn on the input device and press the Input button on your remote to cycle through your input channels until you see the device's display on your screen.

AV CONNECTION PROBLEMS

If you're on the right input channel and your device is turned on, there may be a problem with the physical connection between the device and your TV. Make sure that all cable connections are secure, and also that all cables are connected to the In ports on your TV and the Out ports on your input device. If you're using a connection that has color-coded plugs, make sure the connectors are inserted into their appropriate color-coded ports.
If you're using an HDMI connection, make sure that the cable you're using is compliant with High-bandwidth Digital Content Protection, especially if your TV and input device are both HDCP-enabled. HDCP is a copy protection system that prevents the copying of digital video and audio content as it travels over the connection. Systems connected with non-compliant cables won't display any video or audio conten

FROZEN TV

Periodically a TV may freeze up, showing that it's still turned on but not actually displaying any information from your input device or the TV's menu system. To fix a freeze, power cycling is the best solution. TEP 1 Turn off the TV by pressing and holding the Power button on the cabinet until the TV powers down.
STEP 2 Unplug the TV from the wall power outlet.
STEP 3 Press and hold the Power button on the cabinet for 30 seconds, and then release it.
STEP 4 Plug the TV back in and turn it back on using the Power button on the cabinet or your remote control.

HARDWARE OR SOFTWARE FAULT

If everything is correctly set up, powered on and on the right channel and you still aren't getting any picture or sound, there may be a hardware or software fault in your TV. The best way to check is to press the menu button on your TV or remote and see if the on-screen menu appears. If the menu doesn't appear, contact repair

not sure LG has support on that remote

http://www.lg.com/au/support/manuals

see if there is a mode button
menu
select incoming source of signal
might get the signal back

Your Main board is defective. Your board from Shop Jimmy is $69.00 but they are out of stock.EBR65469804 is the part number.

Hi there,

The little tyke has most likely pressed the INPUT button on the remote control and switched the TV away from the external input setting required for watching cable TV.

You did not state the model number of the TV and some TVs function differently with regard to the selection of external inputs, but you should be able to return to watching cable by pressing the INPUT button slowly but repeatedly until you can see the picture from the cable channels again. The INPUT button is located in the top right corner of your Element remote.

If an input selection menu appears on screen when you first press the menu button, use the arrow keys to highlight another input, then press ENTER to select it. I can't tell you which will be the correct input as I don't know the model number of the TV and it depends on which type of cable you are using to connect the TV to the cable box. You should try each input in turn until you are able to see the cable channels again. Please make sure the cable box is switched on when doing this!

If you are still having difficulty, please reply to me from within this page with the model number of the TV and the type of cable you are using to connect the cable box to the TV. I will then be able to provide exact instructions for switching your TV back to the cable input.

Hope this helps.

Regards,
BElectric

On the right hand side of this television there are panel buttons. It appears that your son in law knocked the tv out of the correct input. Press the input button in order to cycle through the 5 inputs. Typically pressing the input button on the side panel of a television and pressing it again and again and again will make it change inputs. Universally the buttons on the tv panel function as follows: Channel up moves the cursor up. Channel down moves the cursor down. Volume + moves the cursor right. Volume - moves the cursor left.
Hope this helps

The remote control has a "Game" button, which is how you select the external input. Since you don't have a remote you can select game mode via the front panel Menu button:

1) Press the MENU button so that the menu display appears on the TV screen.
2) Press the VOL(ume) ▲ button so that "PICTURE" is selected.
3) Select the feature you wish to adjust with the CH(annel) ▲ or ▼ button and adjust it with the VOL(ume) ▲ or ▼ button.

GAME MODE: Set to the most suitable position for TV
GAME. [+] : ON [ - ] : OFF

This will place your TV into Game mode and use the front panel video/audio jacks.

Here is a link to download the user guide: http://www.sylvaniaconsumerelectronics.com/support/manual/index.aspx

Just enter your model number.

Please let me know if you have any questions.

Good Luck!

I too just bought an RCA remote for the same television. The button to access other video screens is the A/B button on mine (next to the last channel button).

njdb,
Look on the remote for keys that are labled tv/vcr or source or input... In fact, if you go to the front of the unit - that's a Sanyo right - find the grouping of buttons that change the channel, volume etc.. There should be a button marked source or input there.. Press it as many times as it takes to get back to the input source your cable is on...
If you have any problems let me know...
Bill