I found out that the, in26 that i have was one of many that was shiped with out thermal tape on the bulb. there tech department asures me that this is the prob and are send me out instruction and material to fix it.
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There is a lens/lamp filter which must be taken out and cleaned, use good air jet to blow and brush out dirt. If the filter is clogged then the lamp might heat up and so shut down..
if the fault does not clean try and force cool the unit, if not there is fault in the power supply, possible lamp problem or circuit error on load or heat.
You will need to open and use a test bench to check out the sections, one by one, use of multimeter and good equipments may be needed . If not take help with consensus.
The Projector will detect the lamp life itself. It will show you a warning message
When you see this message, change the lamp as soon as possible.
Make sure the projector has been cooled down for at least 30 minutes before changing the lamp
Switch off the power to the projector by pressing the Power/Standby button.
Allow the projector to cool down at least 30 minutes.
Disconnect the power cord.
Use the screwdriver to remove the screw from the cover. (1)
Push up and remove the cover. (2)
Remove the 2 screws from the lamp module. (3)
Pull out the lamp module. (4)
To Replace the lamp module, reverse the previous steps,
reason for fan spinning at high speed after shutdown is to cool down the projector after it has been on
you will feel hot air from exhaust as this is taking the heat away from the lamp, where all the heat is generated
if it shuts down after 20 mins either the projector is blocked, maybe, a fan is not running, filter blocked, or the motherboard is now u/s
I had the same problem. There is an internal reset button just above the lamp that needs to be reset. You have to take the cover off, which would void your warrantee, but it's quite easy. My lamp only had 660 hrs, and I bought a new one too. So now I have an extra. My guess is that my filter was getting clogged causing an overheating situation and tripping this reset button which I'm guessing is a heat sensor.
How old is it ? Approx how many hrs have you used it? Was it set at Lo speed / low power or hi speed / max power on bulb and fan? Do you smoke in the same room? Is the unit ceiling mounted ( more concentrated hot air ). Have you had a power failure while the unit was on? The bulbs used in many projectors , although claiming 3000 or more Hrs ,are subject to early failure. If the unit or bulb is new ( less than 1 yr. old, contact the service manager at that co. and complain about short life; IThat works !
Pls check if the lamp is not so old that is giving the same problem. If lamp is almost new, then you can have a check with the Ballast unit card and then the loose connection in the Power supply or may be overheating and tripping.