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We just replaced the lamp in our Samsung HL-S4266W. We bought the lamp from Samsung parts, so it is a good lamp. Now when we turn on the TV, it makes a whirring noise thenjust shuts off. The LAMP LED flashes and it tries to turn back on, but never does. Could this be the ballast or the color wheel? Thanks!

That's not enough information... The lamp is always the best place to start. Make sure the lamp is a Philips lamp first of all.

Was there discoloration when it died? What kind of noises does the set make? Did you close up the back cover? There are a lot of things you've got to check -- that being said, it's possible it could be either the color wheel or the ballast.. or the perfect storm when you have all three components dead! That's pretty rare though.

Yes, I have checked the back cover and such. There was nothing else other than it just shuts off and tries to come back on. It makes a whirring noise-like something is trying to spin.

The replacement lamp is a Phillips. I bought it from Samsung, so its a good lamp.

Thanks!