Television Fade After about 4-6 hours of use the pictures fades away. Sometimes after a few days it will start working again, sometimes longer. I am curious as to what I need to do to fix it.

Thats a deflection problem which is causing the CRTs to shut down during deflection loss. The deflection board will need replacement. You can get replacement deflection boards from www.tvrepairworld.com

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/ Type in this key phrase " my service table today " in the search box at the top right of the the home page, to get gathered some pages which has the details of practical experiences of the author of that site. The search result might display about 20 Nos of related posts. Press the "All posts" at the bottom of the list, then you can select them one by one.

The backlight inverter is dropping out, on the older lgs the backlight inverter is separate from the power supply, if this is the case you can only obtain it with a new panel.

otherwise the newer lgs have the inverter built on the power supply.
in this case you can replace the entire power board.

The most common issue with these model of Sony CRT rear projection TV's is faulty CRT's. the blue was the most common of them to fail. If that is the case then you are unfortunately out of luck as the CRT's are no longer available. there is a possibility of finding a service technician who can remove the faulty CRT and have it sent away to have it rebuilt. The problem is eventually the remaining 2 will do the same thing at some point. Take a few moments to rate my answer... Thank you. : )

A POOR GROUND CAN CAUSE DASH TO FADE OUT OR THE CLUSTER IS WORN OUT.

replace the turn signal switch and it will alll go away.

******** punk

you may have just put it into fade out. find thee fade out control and reverse it the mode. hope that works.
DFD

Bad tuner

The only thing I can think of that would make the picture fade to black is a loose solder joint on the filament supply. Each of the 3 picture tubes has a filament and if the 6.3 volt supply to those filaments is suddenly lost, the picture fades to black as the filaments cool down. An experienced tech can find and correct this for you quite easily.