Replaced bulb but tv comes only comes on for about 10 to 15 seconds then shuts down and red light flashes
I replaced the blown bulb and the tv worked for about 12hrs then shut down. I thought the replacement bulb might be bad so I exchanged it for a new one. I installed the new one and when I turned the tv on it still shuts down within 15 seconds and the red light flashes. If I turn the tv on with the bulb out of the tv it doesnt shut down. The manufactured date is May 2005.
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The problem could be in dad board on top on the light engine.Any problems with the DAD board or the light engine will cause the unit to go into shut down. Replacement of the light engine usually includes the dad board. I know for fact that a number of Samsung DLPS have bad light engines and the use Texas Instrument LGs. You should have this verified by a professional technician. These light engine assembly's can be very expensive.
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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
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Being a projection device... Which most TV's aren't ...
You need to break the fault down into the Projection Section or the TV Section.
Or Power Supply Section
Projector bulb blown, overheating etc.
Power supply sensing overload or fault then automatically shutting down.
TV Section may be OK
small internal LCD screen is projected by lens.
U recheck the tv projection lamp connections,the door latch and the lamp door closed properly and tightly.Yes,if the tv projection lamp LED light indication "LAMP" word it is still flashing or staying on the tv projection lamp some how dying again.The tv projection lamp should be replacing it again.
It could be the temp sensor going bad. This sensor sits on top of the
metal housing which the bulb assembly slides into. The bulb assembly
will have a hole on top and this is where the sensor is above. There is a
small blue and white wire that plugs into it. If you pull the wire out
and put a paper clip or wire in the coupling you will basically bypass
the sensor connecting the blue and white wire. If your tv turns on then
that is your problem. Its cheap too. Here were my symptoms..1] Turn tv
on 2] Bulb would light up..(which eliminates the ballast) regular
picture would show up (which eliminates the bulb and color wheel) 3] 30
seconds later tv would shut down with 3 flashing lights. After bypass
the tv turned on as always and hasnt shut down yet. Always un plug tv
first. Get the replacement part to avoid overheating and possible fire
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.
Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.
For example, 3 flashes, then 7 flashes = 37.
Here are the error codes, and the corresponding problem:
12 = No error detected, check power supply.
32 = Lamp Cover is open.
33 = Air filter cover is open.
34 = Lamp abnormality
36 = Light Engine (DMD or Lamp Fan stopped)
37 = Exhaust or Lamp Ballast Fan stopped
38 = Lamp Temperature High
39 = DMD Temperature High
41 = Short is detected
44 = DVI cable between FMT and Engine disconnected