Search: 42LG30R
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42LG30R Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG42LG30R
Greenish and sometimes flashing pictureDirt on the lvds cableLVDS Cable Cleaning (which goes from the main to TCON)Wsmartcell
LG42LG30R
Red LED turns off as if it was going to turn on and it doesn't turn on, power supply voltages are absentShorted transistors on the inverter, the fuse did not open, causing the 24v power supply to tripdavi.sls
LG42LG30R
Turning off or not turning on intermittently.Filter capacitor c620Replace capacitor c620 150/450vValdenir tecvideo
LG42LG30R
Red image, menus with ok colorsRewrite the ic802 eepromResistronic Resende
LG42LG30R
Green or whitish imageCorrupted software ic802Rewrite software from ic802 memory atmel 24c64 1.8vGABSENS
LG42LG30R 32LG30R
Turns off by itself, sometimes it doesn't turn on, sometimes it gets a greenish screen, it makes noise from the speaker and turns off.It may be caused by several possible problems, carry out the following procedure to resolve and avoid a possible return.Check the power supply and inverter board for swollen capacitors and replace them. Remove the power supply components: c108, zd111 and zd112. Also at the power supply, replace the 11k resistor r128 with a 15k or 18k one. On the main board, replace the SMD electrolytic capacitors that are close to the processor and RAM memory with values ​​of 100μFx16v and 10μFx16v. Clean the main board well on both sides with thinner or isopropyl. resolder all fets, transformers and heatsinks on the power supplyGABSENS
LG42LG30R
Turns off by itself, sometimes it doesn't turn on, sometimes it gets a greenish screen, it makes noise from the speaker and turns off.It may be caused by several possible problems, carry out the following procedure to resolve and avoid a possible return.Check the power supply and inverter board for swollen capacitors and replace them. Remove the power supply components: c108, zd111 and zd112. Also at the power supply, replace the 11k resistor r128 with a 15k or 18k one. On the main board, replace the SMD electrolytic capacitors that are close to the processor and RAM memory with values ​​of 100μFx16v and 10μFx16vGABSENS
LG42LG30R
The standby flashes 2x, then just the blue LED and it doesn't turn onDefect in the inverter, I replaced it, it solved it, you can disconnect the inverter and the sound comes out, just to testLucasvisita
LG42LG30R
Turns on after 40 minutes in hot weather, it turns off, only when it cools down it works ok, diode d1103 is weak. Change caps c875, c879, c1110, c1118, c1128.8By quickly disconnecting the capacitors, the diode took a while to turn off only in hot weather.guinga sdia goias
LG42LG30R
Hdmi, av., component inputs do not work.Removed from the eeprom-flash (ic 802 or ic 803, I don't remember) and saved the .bin file (memory type 25co) of the relevant model. The detail is that you have to check if all the inputs are working. If not, it's the processor or Corrupted memory. After recording and resoldering, the inputs started working again.JOSE CARLOS
LG 42LG30R
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Turns on and within a few minutes turns off or locks the keyboard.C 875 and c879 on the main board of 10 micro by 16 voltsSwap c875 and c879 on the main board.This email address is being protected from spambots. You need JavaScript enabled to view it.
LG42LG30R
Standby passes to blue and does not turn on. without 24, 12 and 16vRl-101 ​​with open bonnet.XANDARE
LG42LG30R
Completely stoppedFuse open, q110 and q111 shorted, r140, r119, r120 open and zener zd115 (7v5) leaking see more. ..Strutz
LG42LG30R
TV turns on and off2 capacitors 10/16v on the main board c879 and c875Replacing capacitor c879 and c875Marcio
LG42LG30R
LP81A
Strange letters and characters in the TV's menu and OSD, and HDMI inputs with no image.Corrupted memory.Rewriting of memory at24c64, position ic802.rafaelmoraes99
LG42LG30R
TV would turn on after a few minutes on HDMI 2 it would turn off and on 1 it would have no sound but with image but controls no longer workedDifferent capacitors change without testing, c1110, c1118 and c1128Replace capacitors on the main board, replace without testing, c1110, c1118 and c1128 with electrolytics or if you have the same onesES informatica e eletronica
LG42LG30R
Turning off by itself, sometimes the sound fails, disconnecting the speakers, it stops turning off.Replace without testing, c1110, c1118 and c1128Miratec Eletrônica
LG42LG30R
After changing the swollen capacitors, it still turns on sometimesReplace r128 for 20k and r110 for 270k remove from board c108 zd 111 and zd112HP ELETRONICA
LG42LG30R
Doesn't startReplace r128 11k for 20k if it doesn't work, replace r110 330k for 270kjeferson
LG42LG30R
Nothing or LED turns onQ602 shorted, replaceBruske