Wow, this just happened to me( 12/12/08). Mine was under warranty, but it took the guy like 2 min to replace the buld. It's in the front bottom panel on the left side. I think the buld cost a little over $200. I hope you don't ened up with the same problem I am having now, "the red glow" on 75% of the screen. I think it's the light engine.
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It sounds like you have a bad ballast board, or possibly the power supply going to the ballast bulb. I'm afraid that if you do not have the repair experience on solid state TV sets, you will need to contact and authorized Mitsubishi repair center. Good Luck
First, if you have the manual, open it to troubleshooting, if you don't have it; www.sonystyle.com then click on support, then manuals. you can download it for free. The manual will decipher the flashes for you to narrow down your possibilities. The three main problems in the Sony lineup are the optical block, the bulb, and the fan. The fan is the only real obvious one that can be fixed quickly. When you turn on the TV, the fan should click on ( may vary depending on your main setup from TV menu) However, if you have any compressed air (dust off) etc. The fan is on the rear of the set on the right lower 1/3rd (looking from behind set) Location is in the manual too. If the fan can't turn on, the TV will shut down. Also, go to this site for further help from "Sony"
http://sites.google.com/site/sonylcdrptvproblems/#TOC-Optical-block-problems-by-TV-model Hope this helps. If you need further help, post a comment and I will help you further.
Hello well this kind of problem all the time is because you have a fan problem and you could have dirt inside of your tv and sounds also like a ballast problem i have this issue also and I got connected on the live chat that a web say has that they call discount-merchant they sell parts and lamps for TV they could help you they help me twice.
Its the fan that cools the bulb. Try turning on the tv and look at the fan to the rear of the bulb. If the fan is not spinning that is your prblem. The tv has a safety switch that will cut off the tv if the bulb gets too hot. I was able to tap my fan with a pencil and get it spinning, but that is just a temperary fix. After a while, you will find the fan will stop working all together and it will need to be replaced.
I have posted solutions for similar problems.
There may be a heat issue with the power supply components.
Remove the back panel and blow compressed air into all the component area, (except the fan on the right). The power supply is on the left.
Then vacuum all the dust out.
There may be a problem with the battery in the remote. Weaken batteries can cause the remote to send random signals (including turning off the set).
According to the E44W48LCD service manual, the temperature indicator red light states the projection TV shut down due to overheating. Red (flashing) states the projection TV shut down, check the cooling fan.