Lamp is possible especially if the ballast was bad--it powers the lamp.
Color wheel will usually display some issues--high pitched whine or fan like noise---with the lamp removed look where it faces--color wheel is there--any broken or missing pieces and it is the problem---
The wheel is directly connected to the set---set will detect if wheel not moving or moving too slow etc and almost instantly turn the lamp OFF.
SOURCE: picture goes blank
Yikes, I have never heard of the set looking like a negative before. What model# do you own?
SOURCE: Samsung 61" DLP 3 Blinking lights.
all 3 lights blinking means lamp has a fault the service manual says replace the lamp. If you need the service training manual for that model let me know and I will post the link as the training manual has excellent trouble shooting breakdowns for that model DLP
SOURCE: black and white picture only
The color wheel is not the problem. If the spinning color wheel is impaired in its RPMs it will cause picture distortion, not black and white picture. If the color wheel looses any of its color fins, like if it is broken, there will be a loud vibrating noise inside the tv which you did not mention. Also if the color wheel is broken and doesn't spin, the tv will not start up.
The likely problem is on the digital control board or the power supply and should be referred to a local repair shop for repair.
There is an outside chance that you will receive color if you experiment with using all of the different input ports to see if you can find one that will bring back color.
SOURCE: Samsung HLP5674 color wheel problem
If you didn't replace the whole assembly with the color wheel, the sensor on the bracket could have been damaged. The sensor detects the black stripe on the hub assembly of the wheel to sense if it is spinning before lighting the lamp. I learned the hard way and just replaced the color wheel. 8 months later the sensor started failing intermittently and then outright failed and it had me scratching my head for a week trying to figure it out. At first the lamp would light for about 5-10 mins, good picture, and then would go out and all 3 LEDS on the front of the TV would flash. Had to pull plug from wall to get it to restart and the the same thing. After a while it failed altogether and the tv would try to start and shut down. It would restart by itself 2 more times, but the RPMs on the color wheel were way too high...the sensor was trying to read the RPMs and couldn't get a reading. The wheel was ramping up and down. After 3 tries, the tv would shut down with 3 LEDs on the front panel. I replaced the bracket with a new one (new sensor and wire) and all is well. I could not find just the bracket/sensor assembly, had to buy the whole assembly (wheel/bracket/sensor). Hope this helps.
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The picture was good before I replaced the ballast but the tv would only stay on for a minute and then cycle on and off with no picture. Since the bulb was only six months old I found posts on fixya that suggested trying the ballast. When I turned on the tv after replacing the ballast it has a picture but it is kind of flashing or pulsating color picture. I have not seen that posted as a color wheel or lamp issue. All of that said can I read into your response that if the ballast is bad it may have done damage to the bulb? Thank you for your help.
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