Why My Projector Turns off After 30 Seconds? – Easy Troubleshoot

When your projector automatically turns off, there are various reasons for this to occur. The projector may have gone into standby after a rest period in the first instance. To bring the projector back to life, all you have to do is press the power button once more.

It is also possible for the projector to shut off if the lamp in the projector burns out for a second time. Because of overheating, the projector will automatically shut down if the power and temperature lights are both illuminated in red. If the projector suffers an internal failure, it will shut down completely. Because there is no other method to switch the projector back on if it has been damaged internally, repairing it from within the projector is required.

As you read on, we’ll go over all you need to know about the projector, including the issues that can arise and how to resolve them. You will find answers to some frequently asked questions. Go through the article keenly for a better understanding.

Troubleshooting steps for a projector that turns off after 30 seconds

Here is a quick table;

Troubleshooting stepsFunctionEssential product
Open the projector casingEnsures check for possible problemsCheck the Epson projector from Amazon.
Make a temporary fix; replace the broken thermistorTo ensure the projector is working.Resistor
Make a permanent fix; getting a replacement thermistorTo ensure a quick fixCheck these replacement thermistors from Amazon

Step 1; open the projector’s case

projector turns off after 30 seconds

According to what I’ve seen online, all Epsons seem the same on the inside. Among the items on the list are a lamp, three fans, two temperature sensors (some models may have three), mirrors, prisms, three LED screens, and a lens. Since the bulb was still operational and all three fans were functional, I reasoned that the fault must have been with the sensor.

Thermal sensors should be employed to detect the temperature since they are inexpensive and do a satisfactory job of measuring it. A thermistor is a resistor type whose resistance varies in response to the temperature of its environment. They provide a non-linear reading as a result of this.

Using the resistance all across the thermistor leads at the connection to the motherboard, you will note that the resistance is zero ohms at the intake sensor. However, the temperature at the exhaust thermistor is not zero.

A thermistor that returns zero ohms indicates that the temperature is infinite. As a result, the Epson processor must have read this as superheated intake air the fan and shut down the printer, triggering a temperature alarm in the process.

Step 2; a temporary fix

a temporary fix

To begin with, you need to replace the broken thermistor with a functional one from your collection of miscellaneous electrical parts. This thermistor is for an exact temperature range that will make you a little nervous. You may make a refined guess about what Epson anticipates the intake air temperature.

Since you must not find a thermistor, you need to figure it is a long shot at this point, take a step further and use a resistor instead, which works just as well as a thermistor does. I believe this one is 200 ohms, but it’s just a stab in the dark. Looking back, you might as well choose a higher resistance, such as 10,000ohms.

In any case, wouldn’t you know it, that’s true? The projector is turned on and begins to work. Let it run for 5 minutes before unplugging the resistor to see if this is the cause of the problem or just a lucky break. As soon as you take it out of the socket, the bulb turns off, and all three fans begin to spin at full speed. It appears like you have whittled it down.

Typically, the projector would only last five seconds without shutting down and blaring the fans, so five minutes is quite an accomplishment in this case. Reconnect the resistor, aim the projector in a less distracting direction, switch it on, and keep it on for two hours to cool down a little. There are no issues.

Step 3; make a permanent fix

Nothing is relatively as permanent as a quick fix or a Band-Aid solution. You may decide that getting a replacement thermistor is unnecessary and that a resistor can bypass an old thermistor. Cut the wire leads leading to the thermistor and solder the resistor in place of the wire leads. Reconnect the cable to the circuit board and tuck the leads beneath the circuit board. Before placing the projector back in its case, ensure it is working correctly.

How to repair an internal problem in a projector

How to repair an internal problem in a projector

Another possibility is that an internal fault caused your projector’s rapid shutdown. In most cases, a solid or flashing LED light is used to indicate the presence of such problems. A device reset is required, which is accomplished by unplugging and reconnecting the power cord.

In addition, you need to double-check that all of the cords are in good working order before using them again. When one or more cords become damaged, they must be replaced as soon as possible. Also possible is the complete deactivation of the button, which would be done for security reasons only.

To activate the projector, push the buttons on the remote control or open the buttons on the projector. If it doesn’t work, you could try turning off the projector for a short amount of time. Consequently, it may be more effective at temperature regulation and responsive when your gadget cools down.

In an internal failure, it will cause the system to be completely shut down. In most cases, internal issues are indicated by either a solid LED light or a flashing LED light, depending on the device model. Once the power cord has been disconnected, you will not restart the device; instead, you will need to reconnect the power cord to the device.

What may be done to prevent a projector from cutting out

What may be done to prevent a projector from cutting out

If your computer shuts down on its own or does not turn on after you press the power button, try one of the following fixes. Provided the projector has been properly attached to the device and if the outlet is in good working order, it can be used outside beyond that period.

If the button is secured in this manner, it will probably remain secure. Many people do this for safety and security reasons, and it is something that a considerable number of people do. You can also use the remote control to power the device and unlock the buttons if you like. This could be due to a problem with the projector’s power cord, which prevents the projector from powering up correctly. Determine whether the cord is faulty and whether it should be repaired or replaced with a new one.

It is possible to turn off the product for a brief time if it becomes excessively heated. After the mechanism has had a chance to cool down, you can turn it back on once more. It is possible to turn on the remote control by merely pressing the power button if the power button on the remote control is not functioning correctly. In addition, make sure the batteries in the remote control are in good condition. Inspect the remote receivers to ensure that the appropriate settings are activated and functioning properly.

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What to do if your computer is overheating

What to do if your computer is overheating

There is a recurring problem in all projects, and the owners are completely unaware of it. They become overheated if they are exposed to a warm environment. Because the fan is pulling air that is the same temperature as the surrounding space, this warmer room may become overheated, and as a result, no cooling will occur.

It’s also conceivable that it’s clogged with dust and other debris. In the absence of regular maintenance, your equipment may quickly become overheated. As a precaution, use the device in a cool environment to avoid overheating. Additionally, dust particles should be removed from the parts regularly by cleaning them.

Examine the projector’s connection

Examine the projector's connection

How a projector connects to the numerous gadgets and equipment differs from one projector to the next. Double-check that the device is correctly connected to the computer system if the screen is foggy or illegible. As soon as you connect the laptop to your device, you’ll notice that it includes a variety of inputs. When using an HDMI cable, make sure it is also in HDMI mode.

If you wish to connect a computer to a network, press the Windows key on your keyboard. When you’re finished, press the P key on your keyboard, which will aid you in retrieving the screen. After that, select duplicate to assist you in transferring the screen. Then, click on the’ expand’ button to make the image appear larger on the screen. The picture quality can be improved by using an AV receiver.

Frequently Asked Questions;

  • How long does it take for a projector to cool down?

When you turn off your projector by pressing the standby power button, it will generally cool down for up to two minutes or up to two seconds before turning back on. If the projector’s alternating current power is turned off during this cooling phase, the fan will stop spinning prematurely, and the bulb will not cool down properly.


Hopefully, the projector will be correctly diagnosed and repaired. Follow the steps indicated in the article to identify the right Amazon products that you will be required to repair.

If none of these suggestions appears to be effective for you, speak with your technician or contact the company’s helpdesk for assistance.

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