Manual for LC3040N / LC2640N

Brand: HP

Category: Television

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: Nov. 21, 2025, 9:20 p.m.

Manual Publish Date: 2004-01-01

Warranty Information

No warranty period is specified in the provided pages.

Basic Operation

Adjusting the Volume: Press the (+) or (–) VOL buttons on the remote control to increase or decrease the volume. The indicator bar on the display shows the increase or decrease.
Muting the Sound: Press the MUTE button to temporarily turn off the sound. Press the MUTE button again to restore the sound back to the previous level.
Turning On and Off the LCD TV: To turn on the display, press the PWR button on the remote control. The Power LED on the display turns blue. To turn off the display, press the PWR button on the remote control. The Power LED on the display turns red.
First Time Setup for Channels: Select the TV receiving mode to Air or Cable. Use the Channel Search feature to set up your channels. The Channel Search scans channels 1 to 125 and adds channels that return a signal. Follow the on-screen prompts to run the Channel Search.
Changing Channels: Press the (+) or (–) CH buttons on the remote control to change the channel up or down. You can enter a one-, two-, or three-digit channel number directly.

Setup

Connect your external devices (composite, S-video, DVI-D, VGA, subwoofer, headphones, antenna, cable box, or satellite dish) to the appropriate rear connectors. Ensure audio cables are connected to the corresponding video inputs. Power the TV by connecting the provided AC power cord to a grounded outlet.

Troubleshooting and error codes

Problem	Solutions
There is no picture or sound.	Make sure the power cord is properly inserted in the power outlet. Reception other than those of broadcasting stations can be considered. Make sure the input mode is correctly set in Input Select.
There is no sound.	Make sure the volume is not set to minimum. Make sure the sound is not set to mute. Make sure that headphones are not connected.
There is no picture or sound, just noise.	Make sure the antenna cable is properly connected. Consider whether TV/PC/AV/SV/YPbPr signals are being properly received.
The picture is not clear.	Make sure the antenna cable is properly connected. Consider whether TV signals are being properly received.
The picture is light or improperly tinted.	Check the color adjustments. Check the tint settings. Check the brightness settings. The fluorescent lamp may have reached the end of its service life.
The picture is too dark.	The fluorescent lamp may have reached the end of its service life.
The remote control does not work.	Check the batteries in the remote control. Make sure the remote sensor window is not under strong fluorescent lighting.
The picture is not sharp.	The reception may be weak. Make sure the antenna is facing the right direction. Check the sharpness function.
The picture is doubled or tripled.	Make sure the antenna is facing the right direction. There may be reflected electric waves from mountains or buildings.
The picture is spotted.	There may be interference from automobiles, trains, high-voltage lines, neon lights, or other factors. There may be interference between the antenna cable and power cable. Try positioning them further apart. The unit may be receiving interference from other devices. Transmission antennas of radio broadcasting stations and transmission antennas of amateur radios and cellular phones may also cause interference. Use the unit as far apart as possible from devices that may cause possible interference.
There are stripes on the screen or colors fade.	The unit may be receiving interference from other devices. Transmission antennas of radio broadcasting stations and transmission antennas of amateur radios and cellular phones may also cause interference. Use the unit as far apart as possible from devices that may cause possible interference.