LG 40LV570H Owners Manual - Page 21

Troubleshooting The software may be updated for improvement in performance. The customer is responsible to ensure the compatibility of their equipment with any LG Electronics software. If needed, please consult with LG Electronics and update new software versions according to the guidance provided by LG Electronics. ••Cannot control the TV with the remote control. -- Check if anything such as tape has been placed over the receiver. -- Check if there is any obstacle between the product and the remote control. -- Replace the batteries with new fresh ones. ••No image display and no sound is produced. -- Check if the product is turned on. -- Check if the power cord is connected to a wall outlet. -- Check if there is a problem in the wall outlet by connecting other products. ••The TV turns off suddenly. -- Check the power control settings. The power supply may be interrupted. -- Check if the Off Time / Sleep Timer feature is activated in the TIME settings. -- If there is no signal while the TV is on, the TV will turn off automatically after 15 minutes of inactivity. ••Abnormal Display -- If the TV feels cold to the touch, there may be a small flicker when it is turned on. This is normal; there is nothing wrong with TV. Some minute dot defects may be visible on the screen, appearing as tiny red, green, or blue spots. However, they have no adverse effect on the TV's performance. Avoid touching the LCD screen or holding your finger(s) against it for long periods of time. Doing so may produce some temporary distortion effects on the screen. -- This panel is an advanced product that contains millions of pixels. In a very few cases, you could see fine dots on the screen while you're viewing the TV. Those dots are deactivated pixels and do not affect the performance and reliability of the TV. -- Displaying a still image for a prolonged period of time may cause an image sticking. Avoid displaying a fixed image on the TV screen for a extended length of time. ••Generated Sound -- Cracking noise A cracking noise that occurs when watching or turning off the TV is generated by plastic thermal contraction due to temperature and humidity. This noise is common for products where thermal deformation is required. -- Electrical circuit humming/panel buzzing A low level noise is generated from a highspeed switching circuit, which supplies a large amount of current to operate a product. It varies depending upon the product. This generated sound does not affect the performance and reliability of the product. Specifications Product specifications may be changed without prior notice due to upgrade of product functions. Television System ATSC, NTSC-M, 64 & 256 QAM Program Coverage VHF 2-13, UHF 14-69, DTV 2-69, CATV 1-135, CADTV 1-135 External Antenna Impedance 75 Ω Environment condition ••Operating Temperature 0 °C to 40 °C ••Operating Humidity Less than 80 % ••Storage Temperature -20 °C to 60 °C ••Storage Humidity Less than 85 % ENGLISH 13