LG 42LH30 42 in. LCD TV - Answered Questions & Fixed issues

I know this sounds strange but try twisting the tv frame back and forth. Once upon a time it worked for me.

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Parts can be had at shopjimmy's web site.

Fault with main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

There are 4 screws found in the center bottom of rear plastic back. 2 at top and 2 at bottom - approx 1/2 inch from bottom the 1st 2 will be about 3 inches apart - then directly above there are 2 more. These screws hold the bracket that holds the stand. Once you remove the bracket there should be no parts sticking out further than the actual television and can now be mounted to the wall with a mounting system.

In such cases it is the TCON board which is found to be responsible most of the times.

There is nothing you can do about it by yourself. Consult some qualified technician or service center .

A clear proof to some loose soldered point at its circuit board, or a loose contact with some cables. You should check and find which one causes the fault.

how about the backlight have you been check if some parts are not working or need replacement.

get a new chord and air duster can and set it for hdmi plug blow the connectio on the playstation 3 ands tv and plug it in

how can I do to obtain the afficheur of my LCD LG42 MODEL 42LH20r-ta

your power supply module is the problem replace it. or have itRepaired.

Probably bad connection of a strip cable to the LCD panel.

I HAD TO REPLACE 2-5 CAPACITORS ON MOTHERBOARD.THEY HAVE TO BE THE SAME UFARAD BUT THE VOLTAGE CAN BE HIGHER,BETTER TO HIGHER THAN SAME.THATS WHY IT BLEW INTHE FIRST PLACE

The fault is to its T'Con board. If you are handy in electronics, visit this site. Check this site for more details. "Electro-help" is the site name. Search it by google search. You can locate it, either at the bottom of the first search page, or at the top of the second. It is an electronics equipments repair help site in English. If you have confidence, proceed. All details about repair can be had from here.

I see so many here with no sound/nopicture issues:ISSUES: 1. IF sound main fuse/s are good.2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.4. Be safe and if you do not know what you are doing don't open the set.Answers to issues:1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.4. Safety first--no TV set is worth getting injured or even killed over.look for bad caps like these on the power board inside the TV.

I see so many here with no sound/nopicture issues:ISSUES: 1. IF sound main fuse/s are good.2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.4. Be safe and if you do not know what you are doing don't open the set.Answers to issues:1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.3. Trouble shooting consists of the above and then at some point you have tobuy and try a board to see if it fixes it or not.4. Safety first--no TV set is worth getting injured or even killed over.Look at the power supply board inside the set (follow the power cord inside to it) for caps that look puffed up and are bad like these.

Are there any lights? If not then I would suspect your power supply. If there are lights it is most likelly your power supply but it can also be just about everyother part on that TV. signal board, T-con, power supply. If you need a power supply. You can get parts at www.interliquidparts.com

Hello
Just contact the LG authorised service center at your town. They can give you the screen. OK.

The fuse is located int he front end of the power supply which is a SMPS- switch mode power supply unit. Now trace the power cord and you will arrive at it from the mains switch.
If the fuse is blown you must be careful and specially if the new fuse blows then it is confirmed you have more damage in the circuit.... In most cases it can be too severe depending on the strike level.
Please check this link for tips on SMPS.

http://www.fixya.com/support/r5826301-working_switch_mode_power_supplies