Color disappears from DLP display

The answers above are correct. It's either the lamp or the color wheel. Testing the lamp is pretty straight forward. Use an Ohm meter to see if the it's filament has continuity. It's unlikely that a good color wheel would fail immediately after changing the lamp. Look to see if some wiring is out of place and rubbing the wheel causing the noise you described. A jammed but otherwise good color wheel would cause the TV to shut down and display an error code.

I would first check the lamp is properly seated and was it a Samsung or a generic brand? Also not indicated is does sound remain or not.

Normally the fans (either 2 or 3) on these don't go bad. Usually increased fan-type sound comes from the color wheel.

Need to replace color wheel to correct this issue.

Bad Color Wheel.
Samsung Parts 1-800-627-4368
Mats 1-800-628-1118

Hi,If you are getting a black and white picture,color discoloration or a humming high pitch sound, it will be an issue with the color wheel.The color wheel is a rotating disc that spins at high rpm and its in charge of creating the colors on your set.Found it here:http://www.discount-merchant.com/Samsung-Replacement-Color-Wheel-HLS-HLT-Series-p/samsungcolor_wheel_bp96-01579a.htm You can replace it
your self here's an example: http://guides.fixyourdlp.com/samsu/bp96-01579a.php
Good luck and God bless you!

It may be a loose conetion inside the set. Open and carfully check the conections.

Hi, sounds like a bad color wheel, a technical repair that should be done be a trained repairman, cost around $250-275 installed

I’m happy to help further over the phone at https://www.6ya.com/expert/eric_ab7c09ec01841771

Replace the light engine. If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

do a voltage check the transformer & the bridge rectifier and the whole off the power supply use a meter ther may be power starvation