Color wheel broken - Sharp 56DR650 56" Rear Projection HDTV

Hello, the "buzzing" sound could be from a broken lamp, or the bearing in the color wheel. First pull out the lamp and inspect it, if it look like it's not broken inside or looking burnt, it may be the color wheel.....tks

yes a broken color wheel can prevent a set from powering up but a broken lamp could also shatter and have pieces near the color wheel.

If has lost color on more than one source( just to verify it's not a bad cable or hook up) it's probably a broken color wheel. You can usually see the color wheel when you remove the lamp. There should be a glass looking disc right where the lamp would shine, the wheel will have segments with different colors.

I would contact BenQ's web site and find the dealer list. From there you should be able to source a spare part but they may not be available as they don't break in normal service and are not a stock item requirement.
Hope this helps.

Sounds like the color wheel has broken. Remove the color wheel and see if its broken. Usually a broken wheel will cause those symptoms.

try www.projectordoctor.com

The color wheel has shattered. Probably a bp94-1579 or such. About a 300 dollar repair or so in home, not hard to do for a decent tech.

The color wheel is not the problem. If the spinning color wheel is impaired in its RPMs it will cause picture distortion, not black and white picture. If the color wheel looses any of its color fins, like if it is broken, there will be a loud vibrating noise inside the tv which you did not mention. Also if the color wheel is broken and doesn't spin, the tv will not start up.

The likely problem is on the digital control board or the power supply and should be referred to a local repair shop for repair.

There is an outside chance that you will receive color if you experiment with using all of the different input ports to see if you can find one that will bring back color.

The color wheel has failed in youtr projector. There are 4 pieces of glass in the color wheel which fit togeter in a "pie" formation and they are red, blue, yellow & clear. This wheel is spun by a motor. The glass is glued to the motor's hub, and, when it fails the glass segments are thown off the hub. This gives you a B&W picture because all of the light is allowed to shine through the optics all of the time. Replace the color wheel with Toshiba part no: 23125963. It will be about $65. No soldering is involved, just use care with the ribbon cable to the motor. You will need a no. 2 phillips screwdriver and a set of jeweles screwdrivers to do this.

recheck those plugs from color wheel to dmd bd, when was the last time you replaced the lamp?