Tv makes a humming noise

This tv design have a colors wheel in it,have humming sound or loud motor noises.The colors flashes Black&White or lost all colors.The colors wheel is dying and the causes.The colors wheel replacement are not a do it ur self project.Hire a tv Tech. to do it right the first time.Colors wheel sit way back close to the Light Projection Engine itself.

I learned that the problem was a broken color wheel instead of a bad lamp. It appears that the color wheel gets very hot and brittle because of the proximity to the lamp. Eventually, parts of one or more of the glass wheel-blades break off and make noise if they are still next to the wheel.

Bad Color Wheel, Call Encompass forPart 1-800-638-3328

The color wheel is most likely needing replacement.

Yes, the Color Wheel would be the only thing left. I am not sure about this exact model but the Color Wheel in other Samsung models are replaceable.
Hope this helps,
Skyassoc

sounds like the color wheel

Yes a humming noise on that model is usually related to the color wheel It will get progressively louder

You better to check the color wheel or Lamp ballast.

Normally, the noise comes from color wheel.

Sounds like the color wheel has shatterd, thats a fairly common problem with that model.

This tv usually if detects a fault will display via leds a error flash code. Refer to Owners manual for What the codes are for. If you go to Samsung Website Copy and paste link for manual.
http://www.samsung.com/us/support/search/supportSearchResultView.do?group=televisions&group_cd=&type=televisions&type_cd=02010000&subtype=dlptv&subtype_cd=02010300&model_nm=HLR4266W&dType=D&vType=R&mType=&model_cd=&menu=download&prd_ia_cd=02010300&acc_ia_fl=N&disp_nm=HL-R4266W

Problem may be lamp is failing or ballast which operates lamp may be Bad. Could also be Temperature fault from Inoperable fan or Color wheel. Bulb of course is first choice of possible problem followed by color wheel then ballast. Color wheels usually will start making bearing noise when they start to fail. Hope this helps.