Picture has been slowly getting darker and darker over the last year. TV is just over 1 year old. LG's 52LG50.

Check and replace the damaged component/s at its main board.Contact any service technician.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/

Sounds like lamp again-- dark pic. Get quality lamp, need 4 inch space all around TV for cooling. Maybe cleanout dust inside.

How to fix repair vertical lines on half of LCD tv screen

Contact any service technician. Its CRT base connector socket, or, LOT is faulty. This is not a user repairable fault. Replacement to any one among component stated above, or both, might need replacement. Gopakumar Gopalan Google

the picture getting darker means the lamp has aged and u need to replace it another thing u need ti replace the mirrors in the light tunnel of the light engine they have faded secondly the noise means the colour wheel has aged you need to replace it u will have to replace the whole light engine cos the color wheel comes inbuilt the light engine and u will be ok ontact lg dealer in your area

Hi, I've had that happen with TVs before, it tends to be caused by blown capacitors on the motherboard. It can be fixed however it's not something you could easily do on your own, you'd want to take the TV to a local repair shop, I've seen the repair range from $50 up to $250 or so in my experience.

How long u have this RCA analoge tv?Around 10 years or more and used it like about 5 or 6 hrs everydays?Yes,than ur tv it is losing CRT tube radiation cohetion.As times go bye years in years out the tv CRT-(tv tube) radiation will slowly dying out,Tv actual pictures will lost some of it luster and it brightnesses to the tv auctual pictures.Brightnesses of CRT tube will get darker and darker until the tv actual pictures barely it is watchable anymore.Contrast,Brightness and Colors adjusting more will help some.But u have to take this tv aparts and take a Flat scerw driver turn up a little bit more of the tv HV-(high voltage) SCREEN button on the FBT-(flyback transformer) to make any big differences of the CRT tube brightnesses.The FBT-(flyback tranformer) is the big block of plastic with a red wire with a black cap hook up to the tv CRT-(tv tube).This adjustment on of the FBT,HV-SCREEN button will help the tv CRT-(tv tube) last another year or two.

This memory loss issue sounds like a problem with the main board inside the TV. The channel memory should not erase after a power cycle.

You are probably loosing other custom programming like your Display and Audio settings. That is if you had modified something in these menus.

You may want to check to see if this is also happening by making a change in like the Display menu, and then turn the unit off and back on.

The TV has a one year warranty on parts and labor.

souns like an over heating isue
try cleaning out the unit
take it to the local mechanic have him give your tv a ******* (with compressed air )
heck hes been screwing you so his kids can go to coledge for years whynot get a freebe?

have you tryed adjusting the picture in the menu section! this may help!! or on back of tv is adjusters those may help as well.