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Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement

Introduction

If your Epson PowerLite Home Cinema 1040 (model V11H772020 or H772A) fan constantly runs even right after you turn the projector on and the lamp is still cool, there could be an issue with the temperature sensor. The temperature sensor in the Epson PowerLite Home Cinema 1040 is a green chip about the size of a nickel. It has 2 wires that plug into the motherboard. If there is a malfunction with this sensor, the projector will constantly think it is overheating, and the fans will constantly run and the projector may even shut off.

This guide demonstrates the steps necessary for replacing your temperature sensor.

Before beginning, make sure to turn off the projector and unplug the power cord.

What you need

  1. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement, Removing Housing: step 1, image 1 of 1

    • Turn off the projector and unplug the power cord.

    • Allow the projector lamp to cool down for an hour or more to prevent injury.

    Edit

  2. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 2, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 2, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 2, image 3 of 3

    • Use the Phillips #2 screwdriver to remove the 9 mm screw that secures the lamp cover.

    • Slide off the lamp cover and remove it from the projector.

    • If the lamp is broken, glass fragments may be found when removing the lamp cover. Be careful when removing the lamp cover and when removing the glass.

    Edit

  3. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 3, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 3, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 3, image 3 of 3

    • Use the Phillips #1 (PH1) screwdriver to remove the three 7 mm screws around the perimeter of the lens cover.

    Edit

  4. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 4, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 4, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 4, image 3 of 3

    • Remove the air filter cover.

    • Remove the two PH1 7mm screws from under the air filter cover.

    Edit

  5. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 5, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 5, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 5, image 3 of 3

    • Remove the two black, PH1, 6mm screws.

    Edit

  7. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 6, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 6, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 6, image 3 of 3

    • Flip the projector so the bottom is exposed.

    • Remove seven PH1 7mm screws on the outer rim of the projector.

    • Some screws are located deeper in the housing and a bit extension or longer screwdriver may be required.

    Edit

  8. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 7, image 1 of 2 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 7, image 2 of 2

    • Continuing on the bottom, remove the two black, PH1, 6mm screws.

    Edit

  9. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 8, image 1 of 2 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 8, image 2 of 2

    • Remove the cover on the backside of the projector where the inputs are located.

    Edit

  10. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 9, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 9, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 9, image 3 of 3

    • Pull the top half of the housing upwards and rest it on the side.

    • Be careful to not pull upwards too hard. The top is still connected by a thin electric strip.

    Edit

  11. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 10, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 10, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 10, image 3 of 3

    • Using your fingernail or another thin wedging tool, disconnect the electronic strip from the motherboard.

    • Remove the top half of the projector housing completely and set it to the side.

    Edit

  12. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement, Temperature Sensor: step 11, image 1 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement, Temperature Sensor: step 11, image 2 of 3 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement, Temperature Sensor: step 11, image 3 of 3

    • Use the Philips #1 to unscrew the 3 silver 7mm screws securing the fan frame in place.

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  13. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 12, image 1 of 2 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 12, image 2 of 2

    • Remove the fan frame.

    Edit

  14. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 13, image 1 of 2 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 13, image 2 of 2

    • Locate the temperature sensor above the cooling fan.

    • Pull the green temperature sensor chip out of the plastic housing that keeps it in place.

    Edit

  15. Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 14, image 1 of 2 Epson PowerLite Home Cinema 1040 Temperature Sensor Replacement: step 14, image 2 of 2

    • Unhook the red and black temperature sensor wires that lead to the motherboard.

    • Remove the temperature sensor from the projector.

    • These wires are small and removing them can be difficult.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

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Connor Didericksen

Member since: 02/09/23

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Utah Tech University, Team 1-6, McMurrin Spring 2023 Member of Utah Tech University, Team 1-6, McMurrin Spring 2023

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2 Guide Comments

What happens when you just remove the part, will it never turn on? I’m trying to find a replacement sensor for my 1080 but I’ve had no luck so far.

AirAngel - Reply Share

Very helpful. Even if it doesn't fix my issue on a epson eb-x27 solid status light with blinking status light. Neither lamp or temp alluminated. No fan or lamp. I tried a known working lamp and checked obvious safety switches. I have 17v from psu to board. Not sure if there are any other outputs missing that should be there though. I'm wondering if this thermistor is putting the unit into a safe mode. Or I have another rail loss somewhere detected or another issue.

Adrian Brown - Reply Share

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