Problem with a LG 37in lcd when i turn it on it takes forever for it to show up a picture on the screen the green light comes on and then i gotta wait

SOURCE: LG LCD 37'' standby problem

if you want i will buy the tv from you

SOURCE: LG RZ 37LZ55 37 in HDTV LCD Screen Dead

hi there, the lights indicate that you have no video signal. do some test. ty

SOURCE: LG LCD TV 32LC4R BLACK SCREEN

change the power regulator

SOURCE: frozen picture on LG LCD 37"

Try One of your working TVS and connect it to your cable outlet of the TV that is having problems. If that TV Does not work then there may be a degraded fitting or the Leg coming of the splitter to that outlet could have a Low Signal Problem
Next Take the First TV that was not working properly and put it on the cable outlet of one of the TVs that is working properly and if the TV set works on that Channel then you know it is not your TV that it must be the cable

SOURCE: LG 42 LCD no sound or picture

This is probably bad capacitors on the power supply board. My LG 42LB1DR has a known problem with this and I replaced the four bac capacitors myself and saved 5-6 hundered dollars that I was also told that it would cost to fix. I fixed for under 10 dollars and about 20 minutes. LG knows about it but they dont really want to admit it. My TV was only 26 months old when this happened. The four capacitors are made by Samxon and are 2200uf @ 10v. They are junk so even if you have the entire board replaced for say $200 its just going to happen again. They need to be replaced with a different brand.