When I turn the tv on, after a few minutes color fluctuations begin appearing and there is a vibration coming from the fan area. I removed the lamp, tried to vaccum out the dust, then replaced the lamp. This worked for a few hours then the color fluctuations began again, any insight would be grateful.-Jason

SOURCE: samsung hlt5075sx, had lamp replaced a few months

You need to replace the thermal sensor. It is located on top of the lamp housing.

SOURCE: Lamp Light still on after replacement

First, A common mistake made is when you insert the orange ribbon cable from the Color Wheel into the DMD bd. To correctly insert the Ribbon Cable you need to look at both sides. You will see a shiny silver side and a dull black/orange side. You must insert the shiny silver side AWAY from the Color Wheel or towards the rear of the set. Now for the Ballast. When you power up the tv,Do you hear a short Buzzing sound? If you do that means that the Ballast is trying to fire up the Lamp and is working. Next, do you hear the Color Wheel spin up? If you do not then you have installed the Color Wheel incorrectly and you need to repeat the installation while making sure that you hold the rubber gasket in perfect place or else it won,t work. Chances are the gasket is in the wrong position and is binding the Glass Wheel. The Ballast is on the right side of the engine and on top of the Lamp Housing. You will see two RED High Voltage wires coming out of one end. Don't worry, there is no stored voltage in the ballast so you won't get a shock providing you have unplugged the tv from the outlet. That is the first step before you change any parts any way. Listen for the correct start sequence. With the rear backing off and the Safety Interlock Switch is being held in the up position, turn on the set. First sound you hear is a clicking which is the power on relay engageing. Then you will hear the fans turn on and then the Color Wheel spin up. Once the Color Wheel spins up and comes to full RPM then the Exciter on the Ballast will Buzz for less than half a second and then the Lamp should light up. Now if you have installed the correct Lamp and correctly installed the Color Wheel and you either are holding up the Interlock Switch or have reinstalled the rear cover and tightened all of the screws you should have a working tv.

SOURCE: tv turns itself off and then back on with audio only

well it might be an issue with your ballast, since it might not be sending enough voltage to the lamp or it can be sending more than it should. i recommend you pout more attention and notice if there's a clciking sound, discountdashmerchantdotcom

SOURCE: TV won't get light to screen??

If you hear the color wheel and then see the lamp actually light up you most likely have a bad DMD board. The part number is either BP96-00678B or BP96-00678D it depends on the chassis you have in your TV. The parts are available through http://www.samsungparts.com

Testimonial: "The TV turns on as soon as you plug it in also?? The remote has no function either when you hit keys it makes the timer light come on."

SOURCE: Samsung hln617w dlp tv won't turn on. Red temp

Had similar problem. Thought it was the lamp. Examined old lamp but it appeared to be good. Ordered a new one anyway. Changed the lamp but the TV screen would not come on. It would make the usual noise as it was going to come on normally but it would cycle 3 times & then turn off. The LED lights in the front panel would indicate a defective lamp. Then read about the ballast. Changed the ballast & still same problem. Tried starting the TV without the lamp installed & noticed that the color wheel did not spin. Removed old color wheel & discovered it was broken. This appears to be the cause of all of my problems. I wish I new earlier of the test-turn on the TV without the lamp being installed & check to see if the color wheel is spinning. Would have save money on the lamp & ballast.