20 Most Recent LG 47 47LV5500 47 LCD TV Questions & Answers

Definitely odd for sound to come through and not sound, especially via an HDMI connection. I would contact LG for support, your TV could be defective. Good luck

hi the tv has detected a fault with the back lighting, now it could be a problem with the voltage to the back light or some of the leds in the back light have failed, it will turn off the back light when it finds a fault. behind the screen there is rows of leds on strips and they all light up when the screen is in use. and the main board knows they are lighting up by the voltage its using. when to many leds go out the voltage is too high so it will turn the back lights off to save them. also the same if the power board is not supplying the right volts. say the volts need to light the back screen is 64 volts and its only giving 62 volts the power is not right so it shuts down. same for if the volts go up to 64.5 volts it will do the same. hope this helps you under stand.

Hi, Probably you are gonna have to change the main board! Best Regards! Bye! Serge!

probable board issue press link below http://www.repairfaq.org/samnew/tvfaq/tvtmmqcs.htm

no no no,use only the same parts or ask the supplier

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size. Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Although obvious, things happen: make sure the unit is not installed upside down. Recommend going to the Picture section of you manual, and follow the instructions to reset you unit to factory specifications.

Contact the service provider. Electro help

The set may have in menu or a hidden tech menu some way to center the picture---quick way would be call the Maker in this case LG.