Question about Samsung HL-R4266W 42" HDTV-Ready Projection Television

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Lamp Light still on after replacement

Recently changed out the lamp and color wheel of my Samsung model HLR4266W DLP. I immediately get a flashing "lamp" signal on the front and then a few clicks like the tv is trying to come on. After a few minutes the lamp signal just stays on and nothing happens. Could this be a ballast problem? If so how do I replace the ballast? Where is it located? Help!
Scott

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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.

Posted on Jul 16, 2009

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Check this link it may help - also if your lamp is trying to light you should see some light and hear a sparking noise from the board (ballast board with spark gap lighting)the lamp is plugged into (internally).
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http://www.jangro.com/electronics/samsung-dlp-replace-color-wheel/

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