When i put the tv on there is a loud humming as the tv warms the

I would start by checking all the cooling fans to see if one is dirty or possibly failing.

It's' just the lamp warming up. It usually takes about 30 seconds for a DLP to start up. This is nothing to worry about.

Having the same problem. Please respond with further information.

Check power supply filter capacitor that goes to Audio IC.

check other inputs AVI, HDMI,,

do you here the hum on all inputs?

The hum maybe from a bad ground loop,, unplug all pluged in inputs, [dvd,games,radio,ect] <--check for hum.

If the hum is gone, plug inputs back in one at a time and test,,

When you find the source of the hum, go get a ground loop isolator to fix.

Misalignment of the belt, incorrect belt, worn or loose tensioner, Too tight of an adjustment (many service centers do this on purpose so when the belt breaks in it becomes properly adjusted, I do not believe in this philosophy), The belt is actually one long belt called a serpentine belt.....

mine does the same exact thing nothing fixes it, it only goes away after the tv warms up

sounds like your powerboard, you can try a cheap fix by putting a small fan behind the tv on low and see if that helps. Also I would not settle for this and call in the warranty and get it fixed while you can.

sounds like the color wheel problem.
http://www.jangro.com/a/2006/07/24/samsung-dlp-replace-color-wheel/

We usually find this is the cabinet back rattling. To confirm, when this happens turn the volume on the set all the way down and see if the problem is still there. If it is still there the put your hand on the back of the tv and gently press to see if the buzzing goes away. If the sound does go away the cure is to loosen all of the back cabinet screws around the edges of the set and gently push on the back as you tighten the screw. tighten the screw in an order much like you would tighten the lug nuts on a tire. in other words thighten the top left screw, then the bottom right screw and kepp alternating as yougo around the dabinet back untill they are all tight.

I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92