This is the second time the bulb has failed on my t.v. The first time was no issue, bought a new lamp, replaced it, and it worked. This time- lamp goes out, I purchase new lamp, installed, still didn't light-up, Toshiba replaced the lamp, installed new one and still not working. The red and green lights are still blinking together in 1 sec intervals. Any ideas? Toshiba isn't much help and the nearest tech center is 200 miles away. Thanks!
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Re: Installed 2 new lamps, still no picture...
I had the same problem , first ? do u hear any arching noise like spark on the back of u set , if u do thats the ballast , it need to be repleace , now if there is not a spark u may have a bad light engine , need to repleace engine
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i actually own this tv myself... that striking you here will only occur when the lamp does not fire. as far as lamp life i have found that mitsubishi has the longest lasting bulbs from my experience. i would check to make sure the connector on the lamp is seated properly into the other connector in the tv. if you know your lamp is 100% i would look at replacing the lamp ballast. ive had this tv for a few yrs now and love it.
Not 100% sure but I am currently looking into this. 2 things it might be which are most probable. I replaced my lamp a few years back with no issues. This time around I figured I'd be proactive and bought a new lamp as my current one was going dim. Not unusable but I could tell. Lamp arrived and I put it in. Started up, great! Then after a few minutes it shut down and the red LED would blink 3 times. I removed the lamp and replaced it after unplugging the tv and turned it on. This time it ran about 20 minutes and same thing! Tried a third time and had the same thing. So I put the old bulb back in, and this time it didn't even turn on! I removed it and with a flashlight looked in there. There are two safety switches. The first is a very small pressure switch at the base of where the bulb interfaces to the TV. That switch ensures the bulb housing is seated. Secondly there is a switch in the rear side where the second door with the lever lock is. When you rotate it the switch is engaged. I replaced the housing carefully and made sure everything was tightly seated. The tv has been on for about an hour now no issues with the old bulb.
I have two theories and am leaning toward the second one I will suggest. One is that the bulb is somehow overheating as it is newer and brighter, or is somehow defective. The other theory is that as the bulb heats up the switch might be getting dislodged. I am leaning towards this given that it is working with the old bulb. But I am not certain. Soon I will try the new bulb again and may even attempt to slightly bend the switch out a little so that it is easier to engage.
I had the same issue when replacing my lamp for the first time. I replace just the bulb with the Phillips replacement bulb. After installing the power down issue started and it would take up to 7 attempts before the TV would stay on with a picture.
Since I never had this problem until i replaced the bulb i decided to send the new bulb back and replace it with a difference one. In my opinion replacement parts are never made to the same standard as original OEM parts. This TV is definitely very temperamental in regard to the bulbs.
When the second replacement bulb arrived I decided to not only replace the bulb I also cleaned the connector plug in the cartridge with a QTip and alcohol. I did the same for the plug receptor in the TV.
When I replaced the bulb i insured the the top of bulb lettering was facing the handle of the cartridge so when you put the cartridge back in the TV the top of the bulb would be facing you.
I also cleaned the entire inside of the TV where the cartridge is inserted including the screws.
Once I did all this the TV turned on the first time and has been working fine for three days now.
I do believe the replacement bulb position is very important as to how it heats up and determines when it needs to cool.
I hope this helps others with the same success i had because I really do not want to replace this TV and start replacing all the parts others have done with little to no success for this issue.
It is possible that the ballust assembly is causing the lamp to fail. You likely need to replaced the ballust with a new lamp because if the ballust is bad it has likely already damaged the lamp. If you have been handling the glass of the new lamps with your bare hands this could be the cause of the short lif as the oil from your hands will cause premature failure of the lamp.
Have you contacted Toshiba? They will sell you a new fan. It is possible the power supply has a problem. Bulbs usually have a 90 day warranty. Contact where you bought the bulb. Prices are dropping rapidly for new projectors. Yoiu can buy a new oen for under 500.00.
Your bulb may be blowing because of airflow issues or power cycling issues, first does your outlet get switched off at any point in time? if so you may be killing the bulb before it cools, if you turn the set on/off alot and or restart it after off quickly this could lead to permature bulb failure, if the original lamp was not replaced with a proper lamp to match the ballast it could blow the bulb. If your tv is too near a heat vent or the airflow thru the set is not adequate it could blow the bulb.