My LG 55 TV turn on, show the LG symbol for 2-3 seconds then goes to black screen/shut downs. LG 47" LED TV: Have LG 47LS4500-UD AUSWLUR date of Mfg Aug 2012 obtained as a discard from a stranger with prospect to try a repair. When the set is ⦠[Logo] LG Makes It Easy[Title] Performing a Factory Reset â webOS [Narrator] Press the Smart button on your remote, then click the Gear icon in the top right, then General > Reset to Initial Settings. Jan 4, 2019 #2 Try starting it up in "Safe Mode" and see if it will load without flashing. Follow the onscreen instructions to complete the reset⦠How can channels be tuned on the LG plasma TV? You can check out the two photos below: Not even the red LED standby light. Next, head to General > Reset to Initial Settings. Since you already repalced the power board it is most likely a main board or a button bar/IR board issue. The screen flashes non stop on my LG 55LF6000-UB TV . How to repair an LG LCD TV main board. The boards present are a power supply board and a main board When I test all voltages on the output pins leading to the main board (from the power supply board) the 24v line only reads 3v. Symptoms. I have sound through the surround sound but not TV. Start by measuring the voltage right at the fuse on your power board. After the TV restarts, begin by selecting your language and country. LG - TV MODEL No. You can put the TV in standby by turning it off with the remote control. Apr 6, 2016 25,156 252 107,340 12,190. The TV I fixed is an LG 42â³ LCD TV Model 42LD550-UB.CUSWLHO. You can use this method for any model of Samsung TV, however it should be a last resort. I have tried switching OFF, with delay of more than 10 minutes, so as to reset all internal memories, then switching ON again ( as I ⦠Anyone know if this is the power supply or main board. How To Reset an LG Smart TV to Default Settings Press the Home button on your remote, and select the cog icon in the top-right corner of your screen to open then Settings menu. IT still has sound. I have an LG 55lm6410 No picture, backlights function, and I have sound. For this model, it did not use the switch mode power supply board and in fact it uses an external power adapter that was rated 19 volt -1.6 Amp. The TVâs main board which produces external signals, facing processing problems. It would freeze on the logo screen. So Iâm assuming this will prevent my main board from being able to operate. You'll know the TV is in standby because the red remote control sensor light will be on despite the TV screen being off. TV is an LG 47LA6200-UA. ! Put the TV in standby mode. Can it be fixed? Case Details: The TV keeps going through the entire search but unable to find any digital channels. Mi smart TV lg 42LB5800 doesnât allow to control by remote device, I canât change volume, channel, go to smart tv, access by TVControl App, nothing works just turn on/ off with power button how can I reset it if can control it, warranty is due since may 2015, please help!! 0 webworkings Titan. If the problem persists, component testing is required but most likely the main board is at fault. Symptoms are: NO power at all. The TV would power on and the LG Logo screen with the clock would appear. This is a simple method to fix a TV or other electronic device with bad solder connections. Its only 3 years old . This LG LED 24 Inch TV came in for repair with the complaint of no power.