Top 20 LG 37LC7D 37 in. LCD HDTV Questions & Answers


Check the remote control for its infrared emission. Check it with fresh batteries. Check it by pressing all the keys. You can detect the presence of infra-red emission from the remote control, using a cell-phone camera. If you wish to get more details about how to check a remote control, please visit this site. One among the posts has details about it. In some cases, the remote control might need to clean.
https://electronicshelponline.blogspot.com/
https://homenol.blogspot.com/
https://remotesearch.blogspot.com/
Search the site by type in this key phrase "how to test a remote control "in the "search box at the top right of the display window of the Homepage" to get the related post quickly.
https://youtu.be/wUpnETSm6_k
https://www.youtube.com/watch?v=jsSCNCW3IbQ [open and clean]
https://www.youtube.com/watch?v=Qp-l1uh-5gE [open and clean]


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Could be a failing power supply

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Just change the board unless its just a fuse that is blown

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You need to contact a local TV repair service, UNLESS you have the tools and the repair manual to repair it yourself, it will take diagnostic work to determine what is the cause, one thing is for sure you have a defective circuit board.

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Do a factory reset to this TV, and then check. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
http://electro-medical.blogspot.com/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

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Fault in the main board. You have to replace the main board. As it's have SMD components is would be difficult to repair.
If you wish to get some more details then check the following link.
http://electro-medical.blogspot.com/

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Something has blown.. possibly a resistor, diode or ??? on one or more of the boards. You should take the TV to a service Agent who should be able to resolve the problem.

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Just try a hard reset to this TV, and check. There are two types of reset to TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. 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/
Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

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The inverter board is responsible for the backlight.

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Did you use top quality, low ESR capacitors (such as Panasonic FR range)?

Recheck the solder joints.

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My tv acted the same way. Easy answer........buy a capacitor kit!
it was my first try on desoldering and soldering and I have been watching the tube with no problem for months now!

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There are connectors and circuitry that control the vertical and horizontal picture image generation that need to be at the edges of the screen. The border simply covers these connectors and circuitry so the user cannot see it. Newer models of flat panel TV's solve this problem better to get more picture real-estate to the user. Flat panel TV's are not like the original CRT (cathode-ray) TV's of the past that had borders to conceal a non-linear distortion that occurred at the edges.

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You may have to call lG and ask for a password if they have one that will un set it





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Make sure the cable you are using is a good cable, like the one that came with your PS4. Make sure you are on the correct input that your PS4 is plugged into. Make sure the PS4 is on. Try a different input on the TV.

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If you go to settings and do an auto set up it should find them for you make sure you have a good signal first

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Ask eBay sellers to send you pictures and compare those to the original component, alternatively send eBay sellers pictures of your part and see if they can confirm they have the replacement for it.

If you want to change the caps, they should all be stamped with their ratings, you could order them individually from electronics suppliers. Just make sure you order the same ones in replacement, including ensuring the replacements are the same diameter. The last thing you want is to order a load of caps that don't fit around each other.

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Bad caps in power supply,Crack or splits on top of cap or leaking, Check value of caps in power supply.

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Apparently something else has failed on the circuit board(s).

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