I bought my TV used about a month ago and up until now there have been no problems. I turned the TV off last night and when I turned it back on this morning it looked weird. After a quick investigation I found that the color green was not being displayed. The OSD that use to be green is now black. Tried several different inputs including the colorstream, and nothing will display green. I took a picture of the TV to show the problem (http://img.photobucket.com/albums/v666/Stirlin_05/TV.jpg) The LED in the back should be green as well as the black circle next to the red circle on the blue background (right side of screen).
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Re: Green is not being displayed on my TV
If you have experience troubleshooting solid state TV sets, you should be able to tell by a couple of voltage measurements if its a problem with the picture tube or the drive circuit. Simply take the multimeter and compare the base voltage of the green drive to the red or blue drive transistor. If the voltage is about the same, measure the collector of all three. if the green voltage on the collector is higher then the others, then theres an open between the drive transistor and the crt element. this could be an open resistor, a bad solder connection on the crt socket, or an open picture tube element. If theres no voltage there then your going to have to trouble shoot the drive circuit.
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I had a similar problem with blacks showing up as green. Turning up the brightness a bit fixed it for me. Not a permanent fix, but something to try if you want to make it last a bit longer until you can get a new one or fix it.
this is a symptom of a bad lamp. for some reason it won't spit out a lamp error. shaking up the lamp will sometimes fix temporarily but you will find replacing to be the answer. if your tv has a fan error, you will get 4 red blinks.
Your 635 will not display the OSD screen through component. You must use either s-video or rca. It won't upconvert the screen menu this route.
I had one up until a week ago. There are two outputs on the back specifically for the OSD screen. I used a separate old 13" TV with s-video to do my setups. Hope this helps.
Technician just replaced the upper right (from the back) circuit board that conects to the panel. TV now works fine. I bought the display model 8 months ago with extended Circuit City Warranty for $1000 so I can't complain. This was covered entirly by LG/Zenith (nicest Cust. Svc. ever) so we'll wait and see what happens.