Recognized brand in the manufacture of video projectors, BenQ satisfies both professionals and individuals with quality products. However, like all electronic devices, these are not foolproof. It then happens that it encounters malfunctions such as not turning on any more. But do not panic ! There are solutions to try to repair it cheaply or at best at no cost. So find out today what to do when your BenQ projector does not turn on?
Easy handling when your BenQ projector does not turn on anymore
To begin with, there are some easy checks and operations that can restart your BenQ projector. Check them out below.
Reset your BenQ projector
First of all, make sure that your remote control is not defective and that this is not the cause of the problem.
If nothing helps and your BenQ projector does not turn on after checking, this confirms that the fault is with the device. It may be that small malfunctions processor or software related is the cause. To solve this problem, you will need electrically reset your BenQ projector by proceeding as follows:
- Unplug all cables from your projector
- Press the On / Off button for 10 seconds
- Wait 1 hour
- Reconnect the projector power cable
If the procedure worked, your BenQ projector should turn on again. You can then reconnect all the cables. Otherwise, another problem is involved. Then continue with the troubleshooting steps.
Projector maintenance problem
When your Benq video projector no longer turns on, sometimes it happens because of a appliance maintenance problem. Indeed, a video projector is a relatively fragile electronic device that requires some attention.
The device has ventilation filters for prevent dust and dirt from getting inside. But despite that, over time they manage to penetrate and can pose problems for the proper functioning of the projector. In addition, they can block the air vents. If you have never cleaned the appliance and find that it is dusty, then you will need to cleaned up. Be careful, be delicate when cleaning and use suitable cleaning products (spray without water and without static electricity or dry cloth). If in doubt, check the cleaning tips provided in the user manual your BenQ projector model.
If your projector has suffered shock, drop, or oxidation, it is also very likely that the device is subjected to internal damage. In the event of a fall or impact, the lamp will be the element most likely to have broken down. In the event of oxidation, electronic and electrical components are the most at risk.
Power problem
As soon as an electronic device is no longer powered, it will no longer give any sign of life. When your Benq video projector does not turn on overnight and that his lights are off or flashing, so it may mean that he knows a problem in its feeding process. Here are the checks to be carried out:
- Make sure the connections are functional. Check that the cables are firmly seated in their respective ports and that the cables are not damaged. In other words, that they are not deformed, damaged, burned, melted, or stripped.
- Make sure the wall outlet is working. To do this, plug another functional device into the socket. If it turns on again, the outlet is not the source of the problem. If it does not come back on, the outlet is defective and you will need to have it repaired by an electrician.
- In case you are using a BenQ portable video projector, check that it is sufficiently loaded to be able to start.
Overheating problem on a Benq projector
when BenQ projector does not turn on anymore ou that it turns on and then turns off, it is also possible that a overheated be the cause.
Indeed, the device automatically detects when its temperature when stopped or when operating is too high. The temperature sensor then causes the video projector to stop automatically. Several phenomena can be at the origin:
- The ventilation hole is blocked. Check that the ventilation can be done correctly by leaving at least 50cm of distance from any object.
- The external environment is unfavorable to its proper functioning. Leave the BenQ projector in a ventilated place, in the shade, away from moisture, and in a place where the temperature does not exceed 40 ° C.
- A faulty temperature sensor. Indispensable to operate, when it is down, the BenQ video projector will not be able to turn on.
- A fan problem. If it can no longer dissipate heat due to a fan fault, the internal temperature will be too high and it will then switch off automatically during operation. It will then be necessary to wait for it to cool down so that it can restart. However, it will turn off again after a few minutes of use.
Also be aware that a component problem, and more particularly the lamp, can cause overheating but also other problems that could be responsible for the failure of your BenQ projector. Check them out below.
Technical manipulations when your BenQ projector stops working
When your BenQ projector does not turn on anymore, it is very likely that a component problem or the origin. It will then be necessary to replace the defective part. It takes some electronic skills to avoid damaging your device.
Component problem
When a component breaks down, the repercussion is immediate and several malfunctions can occur subsequently. In most cases your BenQ projector does not work at all. The components most at risk are the lamp, the motherboard, and the power supply board.
Lamp problem
La lamp is the most fragile part of the projector and which wears out the fastest. When it breaks down, as a result and instantly your BenQ projector will no longer turn on.
Indeed, the lamp has a limited lifespan and it will therefore have to be replaced sooner or later when it breaks down. There are two types of lamps with more or less long lifetimes. Mercury lamps have a lifespan of between 2000 and 6000 hours while LED lamps have a lifespan of up to over 20 hours.
In any case, when the BenQ projector lamp fails, it could be due to several things:
- the lamp connector is not properly connected or has burned out
- the bulb has burned out
- the lamp is reaching the end of its life
- the lamp overheats and causes the device to switch off automatically
Depending on the origin of the fault, you will then need either simply change the bulbEither change the entire lamp (frame + bulb). Knowing of course that the latter solution is often much more expensive.
Read also: Why does the projector lamp no longer light up and how to replace it?
Please note: : If you have already changed the lamp, the usage counter lamp may not have been reset and it is likely that this is the cause of the fault. Indeed, when you exceed a certain number of hours of use of the projector, the counter may prevent the device from turning on as a safety measure.
Power board problem
When your BenQ projector does not turn on, the failure can also come from a faulty component present on the power supply board. Indeed, to function, many components interact and are essential in the circuit. Optocoupler, capacitor, fuse, transformer etc. are then just as many fundamental electronic components but which end up draining and no longer functioning.
When your projector no longer turns on because of a component, you will have to disassemble the entire device to access the power board.
You have been warned!: If you do not have any expertise in electrical or electronics, we do not recommend this manipulation. Risk of degradation of the video projector which can subsequently increase repair costs and you withdraw the warranty. In the event that your device is still under warranty, do not proceed with disassembly and contact BenQ support. Be aware of the risk of electric shock. Unplug the projector from its power outlet and wait for the device to cool for at least 30 minutes before handling it. In general, if you are not able to perform the manipulations (disassembly, measurement, replacement, welding, reassembly), contact a professional.
If you want to do the checks yourself, then you will need to disassemble the BenQ projector. Depending on the model, the procedure may be different. In most cases, you will need to remove the front cover and the back cover. Once you've accessed the map, here are the checks you can perform:
- Visually check the components for damage. It must not have burned, melted or blackened.
- Check with a multimeter that the power supply board and each of its components are receiving voltage.
- Check in particular that the capacitors are not swollen and that the fuses are not blown because they are more fragile and they are therefore very often responsible for a total failure in electronic devices. You can check these two types of components using a multimeter.
Contact professional service
If nothing helps and your BenQ projector no longer works or that you notice thatother problems appear, contact a professional to assess it and, if possible, repair it. Be careful, always ask for a quote to avoid unpleasant surprises.
You can contact BenQ support, the professional dealer of your projector or a repair service specializing in electronic devices.
Please note: : Check that your defective BenQ projector is not under warranty to avoid repair costs.
