Question about Hitachi CP-X275 Multimedia Projector

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Projector won't power up

Checked the power line ok , checked the the main switch is ok .cleaned the air filter, vacuumed the dust inside the instrument,checked the power fuse it is ok.What's the reason it won't turn on?

Thanks for your advise

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Re: projector won't power up

I have the same problem, it seems like a fault with the psu

Posted on Jun 20, 2008

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Hello! I have a DELL 1209S that the picture is wavering. Is it spring?! Some vertical lines almost invisible in the background are also perceived. What can it be?

follow this steps and fix it. God bless you

  • Secure the lamp cover and the air filter cover of the projector body if the projector does not power on. Ensure that the power cable is firmly connected to the projector and an active power plug. If the projector was turned off and then on quickly--let it sit for 90 seconds before trying to turn it on.

  • 2
    Replace the projection lamp if the projector will not power on or if the lamp indicator is flashing. Turn off the projector and let it sit for at least 30 minutes. Locate the lamp cover and remove or loosen the lamp cover with a screwdriver. Carefully remove the projection lamp from the projector housing using the handle, if available.

  • 3
    Place the new projection lamp into the projector housing and secure it to the projector. Replace the lamp cover and reset the lamp timer. Power on the projector to ensure the new lamp is working correctly.

  • 4
    Remove the projector from the enclosed area to allow air circulation if it constantly overheats. Place the projector into an open area and make sure there is no blockage for the ventilation holes. Unplug the projector for at least 45 minutes to allow it to soft reset.

  • 5
    Clean the air filter to allow the projector better air circulation. Turn off the projector and unplug it from the outlet. Remove the air filter cover and use a vacuum to remove dust from the area. If the filter is unable to be cleaned correctly or is damaged, then replace it. Pull the air filter from the projector and place the new one in the now empty slot. Close and secure the air filter cover.

Oct 29, 2013 | Dell 1209S DLP Projector

1 Answer

Display gets off after 5 minutes

The check the air filter. Clean it first. Turn the power OFF and unplug the device from AC mains. Draw out the air filter cover and remove it. Remove the air filter. Wash the air filter with mild dtergent solution and dry it in a shaded place. Attach the air filter back to device, so that it fits into the each claws on the air filter cover and replace the cover.
If you neglect to clean the air filter, dust may accumulate, clogging it. As a result, temperature may arise inside the unit leading to a possible malfunction. Be sure to attach the aif filter cover firmly. "Power cannot be turned ON" if it is not closed securely.
The air filter will have a face and a reverse side. Place the air filter, so that it fits on a notch on the air filter cover.
If this doesn't help you, check the cooling fan. If fan speed is reduced, proper air circulation will not be ther, as a result the inside of the unit will overheat causing malfunctions, which has not been described anywhere in its manual. If needy, replace the fan. The final possible cause for this fault is with its Lamp itself. Confirm it before replacing, by doing all the above porcedure. OK.

Nov 03, 2011 | Sony VPL-EX5 Projector

1 Answer

How do i access the air filter on the PJ551?

Cleaning the Air Filter
The air filter should be cleaned as described below at intervals of approximately 100 hours. When
the filter is used for approximately 100 hours, the message "CLEAN THE AIR FILTER" appears
when the projector is switched on.
1 Switch the projector power supply OFF, and remove the power cord from the power outlet.
2 Clean the air filter with a vacuum cleaner.
3 Reset the Filter Timer using the function of the FILTER TIME on the OPTION Menu. Please
refer to the description of the "FILTER TIME" on the Table 9: MAIN Menu.
Replacing the Air Filter
Replace the air filter if contamination cannot be removed, or if it is damaged. To order a new air
filter see page 26 for contact information.
1 Switch the projector power OFF, and remove the power cord from the power outlet.
2 Remove the filter cover and the filter.
3 Replace the new air-filter and the filter cover.
4 Reset the Filter Timer using the function of the FILTER TIME on the OPTION Menu. Refer to
the description of the "FILTER TIME" on Table 9: MAIN Menu.

Sep 26, 2011 | ViewSonic PJ551 Multimedia Projector

1 Answer

Many little white dots scaretered throught display

Yes you have dust particles inside the light chamber.
Remove the filters and clean them gently with a vacuum cleaner.
Used a compressed air can to blast air into machine and have vacuum (on Low) **** up dust.
You may have to take out bulb to do this (dont touch the glass on the bulb)


Please dont forget to vote this answer was helpful

Many thanks


Feb 16, 2011 | BenQ MP515 DLP Projector

1 Answer

The projector turned itself off after couple hours of use and the Temp. red light came on. Power Light turned red instead of orange as usual. After 3hrs I turned it back on, cleaned the dust off the fan...

There are three temp sensor inside the projector and now your projector need full service but if the air filter becomes clogged with dust, the internal temperature of the projector will rise, the TEMP indicator will illuminate and the projector's power will turn off (the TEMP indicator will flash after the power is turned off) The air filter should be cleaned every 100 hours of use.
If you clean the filter with a vacuum cleaner to clean off any accumulated dust. then your projector working normally

Jan 03, 2011 | Panasonic PT-LB50U Multimedia Projector

1 Answer

How do I change the filter on my CP S335 projector. It is saying no air flow.

WARNING ?Before caring, make sure the power switch is off and the
power cable is not plugged in, then allow the projector to cool sufficiently. The
care in a high temperature state of the projector could cause a burn and/or
malfunction to the projector.
?Use only the air filter of the specified type. Do not use the projector with the
air filter and filter cover removed.
?Avoid wetting the projector or inserting liquids in the projector. It could result
in a fire, an electric shock, and and/or malfunction to the projector.
CAUTION ?Please replace the air filter when it is damaged or too soiled,
and also when you replace the lamp.When the indicators or a message prompts you to clean the air filter, clean the air filter as soon as possible. If the air filter becomes clogged by dust or the like, internal temperatures rise and the power may be automatically turned off for malfunction prevention.
1. Turn the projector off, and unplug the power cord. Allow the projector to cool for at least 45 minutes and prepare a vacuum cleaner.
2. After making sure that the projector is cool adequately, slowly turn the projector so that the lens-side is facing up. Please be careful for a projector not to fall. While the projector is placed lens-side up, hold the projector.
3. Putting a finger on the filter cover's knob, slide the filter cover in the direction of the arrow to remove it.
4. Holding the air filter's knob, pull the air filter off.
5. Apply a vacuum cleaner to the vent of the projector for the air filter. And then slowly turn the projector bottom up.
6. Apply a vacuum cleaner to the air filter and filter cover.
Please replace the air filter when it is damaged or too soiled.
To prepare a new air filter, contact your dealer and tell the air filter type number = NJ09702.
An air filter of specified type will come even with the replacement lamp for this projector.
7. Position the cleaned air filter or a new air filter into place, and push the points
of "PUSH" word with claws to fix the air filter.
8. Replace the filter cover and snap it back into place.
9. Slowly turn the projector so that the top is facing up.
10. Turn the projector on, and reset the filter time using the FILTER TIME
function of OPTION menu (?37).
NOTE • Incorrectly resetting of the filter timer (resetting without replacement,
or neglect of resetting after replacement) will result in incorrect message

Jan 03, 2011 | Hitachi CP-S335 Multimedia Projector

1 Answer

Pop saying check filter

Hi there...FIRST remove the dust filter and clean it with some compressed air, or you can leave it in place and use a vacuum cleaner hose to suction off the dust. Some projectors have a sensor that gets reset when the filter is removed. A lot don't. Check the onscreen menu for a reset option for the dust filter. This option may be only accessible with the remote control...DON'T reset the lamp hours! The most important thing with LCD projectors or any other projector, for that matter, is to keep the dust filters clean--think of someone putting their hand over your nose and mouth. The projectors emit a *huge* amount of heat and need plenty of air flow to remain cool. Also, the benefit of cool air keeps the delicate LCD panels from aging prematurely!---Rick

Jun 26, 2009 | Hitachi Performa CP-RS55 Multimedia...

1 Answer

Temp light comes on after one hour, the projector heats up very quickly, doe's the fan need replaced?

strip the outer casings off and vacuum the dust from the inside and also clean the air intake filter

Apr 06, 2009 | Panasonic PT AE200 Multimedia Projector

1 Answer

Cleaning my air filters

air flter is on the left of the projector; just click the plastic cover off and then vacuum the filter: if this doesn

Dec 10, 2008 | Hitachi CP-X275 Multimedia Projector

1 Answer

My projector turns on then off

Probably your projector filter is full of dust, and probably even the inside id full of dust. You need to clean the filter and you need to clean the inside. The fan starts coz the lemp inside cant get any air, as soon as you turn the projector on it gets overheated.
Go to a pro and let him/her clean your projector good, then it should work properly again. And make sure that you clean the filter at least 3-4 times per year.

Good luck

Nov 01, 2008 | Sanyo PLC-SW30 Multimedia Projector

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