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So here I am, 4 or 5 months later and I'm still watching the Samsung DLP... haven't fixed it. The humming sound is still there. The color isn't diminished. The picture is still bright. I've been waiting for something to break but it hasn't happened. The way the set is installed, the humming sound is...

I ran the set for almost two hours yesterday. The sound never stopped and the color seemed to be okay. But I'm just about positive that it's the wheel. The sound is definitely mechanical and I guess I'm going to take a stab at replacing it. I'd like to do this before the start of football season. ;)...

Well... Now I need to figure out which type of color wheel I have... then get the replacement part... i saw a few posts that seem to say it's not an easy swap... have you ever done it?

Well then it is definitely the color wheel because it does slow down... I was leaning towards the ballast because there is no issue with the color at this point, just the sound. And it is a nasty sound... Are there any other suspect parts besides the ballast, the lamp/housing, and the color wheel? I...

that's the only thing that is confusing. it does sound like a mechanical noise... especially when it slows down. But it's not high-pitched or screechy. I'll listen again this evening and post the results. Thanks again!

I really appreciate all the advice and assistance. :D The video was dead on and I now can get to whatever I need to change. It seems like it has to either be the color wheel or the ballast. I was leaning towards the ballast since the sound I hear isn't remotely high-pitched but is more of a loud hum...

So I took off the rear panel, removed two set screws in the thought that i'd find it easy to remove the ballast board. My initial take is that it isn't anything like changing the lamp or replacing the lamp assembly. This seems quite a bit more involved. Am I missing something? Been looking for hours...

All righty then... :) From what I've read and seen on youtube, the sound I'm hearing can't be the color wheel because it's not nearly as high-pitched as what I heard. The lamp is actually still working so I guess I caught this early enough. Aside from the humming sound, the unit appeared to be worki...

I've had the set for 6 or 7 years. I can't complain.

Is there any sure way to tell if it's the ballast?

This may have already been covered but I am hearing a humming sound when I turn on the set. It just started and I have a feeling it's a failing fan. Does anyone have any input about this sort of thing? I'm betting that the lamp is going to overheat if I leave it on (which I haven't)... It's a Samsun...