The humming noise on my rca scenium starts just a

When the color wheel starts to go there is a high pitched whinning sound, the humming could be from the light engine or ballast, which may or may not be related to the color wheel. I would have to see it and test things for a correct diagnoses, but it does at least sound like a color wheel in the last moments of its life

ON YOUR REMOTE GO TO MENUE GO TO HEAT SETINGS AND LOWER YOUR SETING TO WARM,,,THIS SHOLUD SOLVE THE PROBLEM....

What is the Model Number that is printed on back of TV?
You say TV is DLP ,but you are posting Model# HD52W59 that is for Projection that has 3 Tubes Red/Green/Blue Tubes.
If TV is DLP then problem will be the Color Wheel
If it is Projection then it has a coil on the deflection board that either needs to be replaced or
resolder ciol and take a Glue gun and glue over the top of coil. Coil LL037 on the right handside of the FBT flyback transfomer.

We had a TV that did that once and the TV repair man said it was a CRT leak which is flamable. So you may want to be careful with it.

I had the same problem with mine. It was overheating. I installed a small cpu cooling fan on the back of the unit. No problems since. Good luck.
Mark

make sure your rca jacks arent touching any metal and your hot (+) cable is not ran on top of your rca jacks and check and make sure your frequencies arent too high

I had the same behavior, but not as a result of power outage. The TV is driven by windows CE software and it goes haywire every now and then. Usually pulling the plug for a few seconds takes care of any problems, but not this time (as you noticed). I had unplugged my ethernet connection on the TV a few weeks ago and thought I'd hook it up again to see if there was a new software release (not likely). I went to the menu and chose "Connections" and then chose "Ethernet Setup" and then chose "Reset All". After I closed the menu the TV rebooted itself (as it said it would). After my TV rebooted I had my analog channels back. There shouldn't be any connection between these two events, but it worked for me. Hopefully it will work for you as well. Good Luck!

Color wheel bad #212184
Approx $400 by an authorized RCA shop

Got the same problem with my second TX-S3082WH Slimfit...the first had the same problem...it was deemed unrepairable and I was advised to return it to Circuit City...now a year and five months later Samsung support has been less than helpful as I am 5 months out of warranty...don't know what I'm going to do...any advice would be appreciated

Sounds like the high voltage transformer is bad. Best bet is to call a service shop. I wouldn't keep watching the set, as this will just cause more damage.