So far,I replaced bulb with the correct, expensive bulb, Nothing changed. The first time of the day it will stay on for 25-35 minutes, then bulb goes out. unplug tv, let sit for 110-15 minutes, restart and it stays on for 5-10 minutes. It would seem that once components are warmed up that the picture wont stay on as long. I can turn the tv on and off several times within first few minutes and bulb lights every time. after that, it goes thru the 3 times on its own and stops trying. ive checked the door switch and even bypassed for time being, the temp switch and fans all work. no odd noises from color wheel. Whats the next step? im leaning towards replacing ballast...
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: Samsung HLP4674W - changed bulb - still no picture - lights flash
If the lamp has been replaced I would think the Lamp ballast would be most likliest followed by the color wheel and then the Digital board. You can get any part needed for your model at www.tvrepairworld.com just leave them a email they respond quickly.
148 views
Usually answered in minutes!
No ideas or suggestions???
Still no help...
how did you get on with this fault?
×