1. picture is getting darker 2. there is a green outline when the brightness is turned up

Does this only happen when watching TV? Or on every input on the TV?

Ensure the connections between your cable source and the TV are solid and in place. Let me know if this fixes it, if not we'll move onto other solutions.

First this set should have a production date on the rear of around 1995--fairly old.

If letters outlined in red etc--a convergence problem--either adjustment with remote (in menu) or a circuit problem in same area.

If picture dull and darker--locate the 3 large lens inside from the rear and wipe them clean--they are the light source for the sets picture and if dirty will cause a dark dull picture.

Let me know if questions.

SD TECH

Many of these DLP sets the picture gets darker right before the lamp fails.

Average life of the lamp is 2,000 hours----about 1 to 2 years of normal use.

If the lamp has not been replaced for a long time it is first suspect in this case.

Let me know if you have questions.

SD TECH

The green CRT has an issue and will need to be replaced. It could be the Green CRT drive board but doubtful as your describing the classic sign of a CRT thats developing a Short . You can get replacement green CRTs and CRT drive boards from www.tvrepairworld.com

Hi, Did the TV go darker gradually or did it happen all of a sudden? Sounds like the tube went!
You Can do a test or two?

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.

Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

• Screen Looks 3-D
• Colors wont align
• Screen may look distorted
• No Audio/Video - makes a chirping sound.

Example Photo:

Problem #2 CRT Fluid has clouded over.

Symptoms

• Dull Video, Washed out
• White/Bright looking video
• Halos around objects
• Red/Orange looking

Example Photo:


You can see more examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Reset RGB screen controls....located behind lower front speaker
grill & access cover.....turn down ( CCW ) green screen slightly
and other two colors as needed.....T.

I had a very similar problem - the picture would get garbled, the black colour would turn into dark or bright blue tones, and i would get wiggly/jaggy outlines on the picture wherever contrasting coulours' edges met. After 2 service calls (replaced video boards both times), i gave up and popped the back cover on the TV. I wiggled a cable that connects the video board (it is on the top left quarter of the TV if you are looking straight at the front of it), and noticed that the picture improved right away.

I found that there is a bad solder on the cable connector, and simply keep the cover off now, as the connection will get flaky once in a while (especially in warmer temperatures).