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From your lack of punctuation in your question, I'm assuming you haven't got much skill in doing electronic repairs. Please put the set back together and see if it works. If not, a manual for that particular model of tv may be valuable in diagnosing the symptom. Also consider having the set repaired by a pro shop if it is worth the price.
Each case is different. With you behind the set I would like someone there to turn the set on and you will listen for what will sound like an arcing sound, usually about three tries, then nothing. That will tell you that the inverter is working to ignite the lamp but the lamp says no. In that case you need to take the 6x6 cover off and remove the lamp and look at it. Some shatter and that's an obvious sign of lamp failure. If you do not hear the inverter then we can suspect the color wheel which is part of the Light Engine. Only will you see a light engines failure is when a polarizer goes bad and discolors your picture. Other than that you can't tell other than trouble shooting. So let's try the lamp way first.
You were told correctly, you have a bad lamp. When the lamp gets old, the reflector becomes cloudy and instead of reflecting the light, it converts it into heat. As the lamp heats, it draws more power, eventually too much power and the set "recycles" because the lamp is drawing too much power. Replace the lamp, use an original Sony lamp as the aftermarket replacements are known troublemakers. If the bulb fixes the problem (and I know it will because I fix these TV's everyday) be sure to rate this solution. Thanks!
my d52w19 chassis itc222 as posted most of the time wont turn on and the green light flashes three times every time it makes a small noise. sometimes it does turn on and you hear a little pop and the tv fires up. latley there is a really high pitch noise that will slightly change pitch if you move the tv or put slight pressure on the top or botttom rear part of the chassis. thanks for the help as I have seen that this has been posted before without mention of the high pitch noise.
This isn't gonna help you, but I have the same problem on my 62HM15A, think we have about the same tv, widescreen DLP,?
My TV does the same thing powers with a blining lite then powers off. First it powered on with sound no pic, then would shut down and power up again with pic and sound , now i gots a nothing just powering on and off until i shut the thing off manually.
thanks, just posted here in case some answers bipea's question and it relates to mine.