No picture, sound is okay

As far as mostly red--turn color to zero and examine screen--if not gray or black and white it may need the screen controls adjusted.

Dark---with back cover off clean the three lens this model has--they are the light source for your picture and if dusty picture will be darker and somewhat dull looking.

Answer is based on brand/model number listed here.

Replace both of your STK ICs STK392-110s Mats has them 1-800-628-1118 They are big blk IC with part number on them.

Small signal board is the issue and only a service technician can get one to replace it. the issue is the cost of repairing is close to the cost of purchasing a new LCD.

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2
Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

You can see some more examples and find a fix here
http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

• Screen Looks 3D
• Colors wont align
• Video may look distorted

Problem #2 CRT Fluid has clouded over. Symtoms

• Dull looking video
• White looking video
• Halos around objects
• Red/Orange looking video

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

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

remove front bottom panel and turn RED screen drive down it will be on your Focus/screen drve control block 3 controls on top for focus R/G/B and 3 below for screen drive to tubes R/G/B

Unplug for 36 hours and try again. Had flashing light and no picture with our Sony and unplugging it solved the problem.

So, You have Five cable leads, The rgb get plugged into there corresponding colors and the other two are your Red and White Audio Input ------Correct? You do not use the in4, that is for a pc with horiz and vert sync. You use input 1 rgb and plug the red and white into the audio input.....your done!

The set has sound and no picture.If you the SSB could be the issue but the tiny red dots on a black screen will need the panle replaced also. There is a way troble shooting can be done to determine if you will need the SSB or the SSB and the panel.

the color card in the plasma is not okay.ihad the same problem and fixed it.