Question about Mitsubishi HC100U Multimedia Projector

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I have 2 SVGA60 Projectors that are saying Temperature!!! One does it then the other about 10 minutes later

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Temperture issues are normally acquired when typically the filters are dirty.

Posted on Jul 10, 2009

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Hi,

Check the filter and clean the filter and reset the filter hours.

Regards,
prakasam

Posted on Jul 08, 2009

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Investigate airflow, verify air vents are clear and filters are clean. Check lamp life in menu, its possible your nearing the end of lamp life.

Posted on Jul 07, 2009

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Several reasons, it could be you havent had its 1000Hrs service and is overheating or filter needs cleaning or lamp is past its change time and is generating too much heat or sensor can sometimes come away and drop into light path causing false sensing of temp.

Marc Engineer

Posted on Jun 17, 2009

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Projector shut down


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My projector turned off in the middle of watching a movie. One of the indicator LEDs which gives coded blinking for different problems with the projector says there is a problem with the lamp temperature....


hi,
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Our projector has said replace lamp for approx. 1 year. We did and it still saying to place lamp. Also it stops projecting after about 5 minutes and then 10 minutes later we are able to use it again for...


You need to reset the LAMP RUNTIME counter

1. Press the MENU button to display the menu screen

2. Press the UP and DOWN arrow buttons to select the "OPTION" menu

3. Press the ENTER button and then press the UP and DOWN button to select the LAMP RUNTIME

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Model PJ556D will run for a few minutes and then shuts off. Once it cools down it will start back up, but shuts off again a few minutes later.


Hello, Greg.

The most common reasons are the temperature is too high or the ventilation holes are blocked.

Unplug the AC power cord, wait 5 or 10 minutes then turn back on.

There could be dust or the air filter needs to be changed.

Take the lamp cover off the bottom. It's possible that the screws holding the lamp are loose.

Hope this helps.


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the number of blinks determine the problem:

Environment Over Temperature- 1 long blink / 1 short blink
DMD Over Temperature- 1 long blink / 2 short blinks
Lamp Over Temperature- 1 long blink / 3 short blinks
Fan1 Locked- 1 long blink / 4 short blinks
Fan2 Locked- 2 long blinks / 2 short blinks
Fan3 Locked- 2 long blinks / 3 short blinks
Fan4 Locked- 2 long blinks / 4 short blinks
DMD Initial Fail- 3 long blinks / 1 short blink
Lamp Initial Fail- 3 long blinks / 2 short blinks
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Inter Lock Open- 4 long blinks / 1 short blink

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1 Answer

Sanyo xp-56 overheating with all air intakes clean


You have thermal protection issues.

On some projectors, once the thermal protection has been activated once, it will activate again at a lower temperature!!!

Inside your Sanyo there are several temp sensors (they are actually temperature-sensitive resistors, called thermistors). I have seen this many times as an electronic technician working on multimedia projectors. For the techs out there, they are actually NTC thermistors (NTC= negative temperature coefficient, meaning as temp goes up resistance goes down).

Once a thermistor has activated to save your machine form heat damage, it may activate again at a lower temperature. The only solution is to take your projector to an authorized Sanyo warranty repair depot, and have the thermistors replaced in your machine.

Typically, there is a thermistor to monitor lamp temperature, and a thermistor to monitor optical block temperature. Better quality machines may have more thermistors, some machines only have one to monitor the lamp temperature.


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u r done!!!!!!

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1 Answer

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Hi Eva

A Projector does'nt like being switched on and off all the time , if you are going to watch a couple of movies - rather leave the machine running all the time - this will also help you to get more hours out of your lamp - and that's a promise.

As far as the noise is concerned - it is most probably just the machine that was not cooled down properly at that stage.

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