LG TV Repair: Common Faults and Solutions.

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LG Repair Guide: Common Issues and Fixes

Brand	Model	Fault	Detailed Problem	Solution	By
LG	42LD460	Flashes standby but does not turn on	Rebaling the bga processor	Rebaling the bga processor	antonio nobrega patos pb
LG	42LG80	TV sometimes turns on, other times it only has a blue LED, if it turns on and after it heats up it doesn't turn on until it cools down. I removed the power supply and sometimes it didn't arm after switching from 5v to power on. It stayed at 5v and none of the other voltages appeared...	Check r609, r623 and the others in this pfc line. Mine was changed from 750k to 780k, I changed it and it was back to normal.		J&M
LG	50PB560B 50PB650B 50PB690B	Does not turn on, only 5v standby, when activating the power the standby flashes and comes back on. without va, without vs, without 18v. auto-gen does not activate.	After inspecting the y-sus, z-sus and trying the auto-gen on ctrl bd, without success, I checked several cold soldering points on the power supply PCI, in addition to the IC that switches the va and vs voltages in short.	Complete resoldering of the power supply, replace ic801 (ncp1397bg)	WorldTV + Eletronica Tecnotronic
LG	21	Original flyback 6174v-6017a is missing	I put it in place, a tfb4126br, I just had to invert pins 2 and 3 +b and 180v. replace one for the other.		MARCONES DE ARARIPINA-PE
LG	21	Substituto do flyback 6174v-6016a	In the absence of the original, I put a tfb4126 in its place, and it worked! but you need to invert the position of the +b and 180v pins. connect the 180v in place of the +b and the +b in place of the 180v.	Replace of flyback 6174v-6017a for tfb4126.	MARCONES DE ARARIPINA-PE
LG	32LP360 42LP360	Turns on, has sound, but no image on the display and no backlight.	Short in c404, main pci.		electronicssupplyparts - Gramado/RS
LG	32LC4R	Does not work, stand by off and 5v stb with slight oscillation.	Change d505 even if it has normal measurement.		RONALDO
LG	32LB560B	TV turns on the LEDs lights up but tsound is no image	Removing the smd capacitor that is on the v-com on the diode side		Jeck
LG	CM8340	Hoarse bass sound	C747 smd next to irs		Neno
HOME THEATER LG	LHD625 PCI	Turns it on and b-protection appears	In my case, it was a piece of wire from the boxes falling inside the main board, closing a short at the output with the aluminum heatsink.	Clean the main board, amplifier sector, otherwise it will be necessary to replace the sound output. it will probably be shorted and triggering instantaneous protection	Eletrônica Sorriso-MT
HOME THEATER LG	LHD625 PCI	Turns it on and b-protection appears	In my case, it was a piece of wire from the boxes falling inside the main board, closing a short at the output with the aluminum heatsink.	Clean the main board, amplifier sector, otherwise it will be necessary to replace the sound output. it will probably be shorted and triggering instantaneous protection	Eletrônica Sorriso-MT
LG	E2060T-PN 715G4197M01-004I	Turns on after a minute, turns off and doesn't turn on again, after a while it turns off, turns on and then turns off, turning off by itself	U704/703 regulator gh12d looking at datasheet is the same regulator 1117l-1.8v	Defective 1.8v regulator, check the voltage of the 3.3v regulator if it is ok	Eletrônica Sorriso-MT
LG	42PQ20R	Curtain	Do auto gen to see if the cards are good, disconnect the main power supply and check the controller and remove the lvds cable		Cabeça
LG	42PQ20R	When you put it on, it hits the reread button but nothing works. The main LED lights up green and nothing else	Change main board		Cabeça
LG	CM8360	No sound, without +65 and -65 voltages	Oxidized pc904 coupler photo, replacing it worked perfectly		Adão Rosa
LG	LHD625 PLACA PRINCIPAL	Call now with the message b-protection	In my case, tsound was a piece of wire from the speakers closing short on the legs of the SMD audio output with aluminum.	I was lucky, it was just a piece of wire closing a short on the board, amplifier sector. If that's not your case, maybe it's a way out. short sound	Eletrônica Sorriso-MT
LG	32LK610	Does not connect wifi.	Check voltages 3.3v. In this case, they were absent, dismantled the connector, removing the black lock, removing and cleaning the connector internally with isopropyl alcohol. Once this was done, the voltages reached the board as they should.
LG	22LU50FR	Without voltages 5v and 15v	Open 1r resistor reference r111, replace it		Will
LG	24MN33N-PSQ	The TV arrived to me without sound	I recommend that everyone, before moving the board, test the speakers, as in my case they were the ones that were burned out.	Replace the speakers and run for the hug.	This email address is being protected from spambots. You need JavaScript enabled to view it.
LG	24MN33N-PSQ	The TV arrived to me without sound	I recommend that everyone, before moving the board, test the speakers, as in my case they were the ones that were burned out.	Replace the speakers and run for the hug.