The projector bulb is not lit, how to solve the projector bulb is not lit

1.Projector lamps do not light up - the usual treatment.

Cause. Use it for a certain amount of time,I don't know how long I used it,I suddenly found that the projection bulb didn't light up after turning on the power of the projector,Maybe the bulb is broken。

Repair method. 1) Check whether there is a stand by button on the control panel of the projector first, if there is, you can try to press this button, control the strength, not too much, because canceling stand by will also cause the bulb to not light up.

2) Under normal circumstances, you can make the bulb bright, if it is still not repaired, first find the spare bulb and then replace it, observe whether the spare bulb is normal and bright, if it is normal, it means that the original projection bulb is damaged, and the problem has been solved.

3) If the spare bulb is abnormal, it means that the projector has other problems, it may be that the power supply part of the projector is faulty, or it may be that the internal working circuit is abnormal.

2.Projector lamps do not light up - special treatment.

Cause. If the lamp does not light up after the projector is plugged in, the projection fan can be rotated, indicating that the lamp is most likely due to poor contact or has been burned.

Repair method. 1) Turn off the power first, don't be electrified, first carefully remove the projection bulb, and then insert it into the lamp holder correctly, check whether the bulb is bright, if it is bright, you can determine that it is caused by poor contact; If the bulb does not light up, the preliminary indication is that the bulb is broken, you can replace it with a new one and take a look, generally fine.

2) If the projection bulb can be lit normally after replacement, and it will not light up after a while, it means that there are other problems, it should be that the quality of the projection bulb itself is too poor, or the lamp other than the specified requirements of the projector is used, or there may be a problem with the power supply, and there is a spike voltage that the bulb can hardly bear.

3) According to the above questions, re-check the bulb again to ask the model and quality, voltage and other issues, if there is no problem, use the universal meter to check other problems, if there is no other situation, it can be repaired normally.

4) Choose a new lamp that is compatible with the projector to try, or ask an electrician to check whether the power supply of the projector is normal.

When using the projector, it is also a normal situation to find that the projector bulb is not lit, when you encounter the corresponding problem, don't worry, check the power supply first, and then look at the bulb, if there is no problem, it may be a problem in other aspects. If the projector lamp is not lit and cannot be repaired, you can find a professional acquaintance to see, it can generally be repaired, and within the warranty period, it can be sent to the manufacturer for repair. If you want to know more home information, please continue to pay attention to home after-sales service.

The projector bulb doesn't light up, which turns out to be the problem here.

But did you know that these can be circumvented, and how can they be done? Read on. The total band width of the projector's channel, which is defined as the upper frequency of the signal when the signal amplitude drops to a multiple.

The increment corresponding to the multiple is -3db, so it is also called -3db bandwidth.

Reason 1: The bulb is in the preheating stage

When the projector lamp is in the warm-up stage, the brightness of the lamp is still very dim, and sometimes it will be mistaken for the projector lens is not bright, just wait for an additional 2-3 minutes, and the lamp will gradually light up.

Reason 2: There is a problem with the cooling fan

If the fan fails, the heat generated inside the Toshiba projector will not be able to evaporate quickly, or the projector lamp will not work, or the internal components will burn out, or even cause the lamp to burst.

Reason 3: The power supply is not connected or the power switch of the projector is not turned on

Toshiba and other projectors have anti-error protection design, when turning on, you must press and hold twice continuously for ten seconds before you can turn on, frequent power off and sudden power failure will seriously affect the life of the projector bulb.

Reason 4: The circuit board part is aging

Due to the high temperature for a long time, coupled with the dust in the power supply part, the circuit board has been working for a long time in poor heat dissipation and dust static electricity, and some capacitors and gas parts are prone to poor desoldering contact, resulting in unstable projector work and occasional failure to light up.

Reason 5: The life of the bulb is up

You can replace or switch to a spare bulb to see if the spare bulb is normal, if it is, it proves that the original projection bulb has been scrapped.

1. Do not last more than four hours

The Toshiba projector should not work for more than four hours each time, otherwise the inside of the bulb will also produce a high temperature, which is easy to cause rapid attenuation of the brightness of the bulb.

2. There should be a short interval for shutdown

When the Toshiba projector switches between the power-on state and the shutdown state, it should keep the projector for about 5 minutes in the middle of the heat dissipation.

3. The power supply should be consistent

The projector and the computer connected to it should be connected to the same power socket as much as possible, so as to avoid ignition between the sockets when plugging and unplugging the power supply and damaging the power supply circuit inside the projector.

4. The switch should pay attention to the operation sequence

After turning on the power switch of the Toshiba projector, press and hold the lamp button on the projector panel until the projector's green signal light is stable.

Summary. If connected, the following issues may occur.

Second, the electrical appliances of the power board are broken, and the power board is the control board for the internal power supply and current distribution of the projector, and this board is broken, and the indicator light will naturally not light up. The power strip is most likely to not be powered by power.

Third, the problem of controlling the motherboard, the control motherboard is the core "core" of the projector. It is very unlikely that the indicator light will not light up because the motherboard is broken, but this possibility cannot be ruled out.

Fourth, the indicator light of the button board is broken, the indicator light itself is broken, at this time, you can press the key of the projector, wait for a while, although the indicator light is not lit at this time, but if the projector can put the picture, it means that the indicator light is broken, not that the projector is not powered.

Fifth, the internal connection line is broken, and some connection lines are broken, resulting in no power is also a common thing.

Why doesn't the power light of the projector turn on?

Hello, is your power cord powered on?

The projector is not in a state where it has gone out and is powered on.

It's energized. If it is connected, the following problems may occur.

Second, the electrical appliances of the power board are broken, and the power board is the control board for the internal power supply and current distribution of the projector, and this board is broken, and the indicator light will naturally not light up. The power strip is most likely to not be powered by power. Third, the problem of controlling the motherboard, the control motherboard is the core "core" of the projector.

It is very unlikely that the indicator light will not light up because the motherboard is broken, but this possibility cannot be ruled out. Fourth, the indicator light of the button board is broken, the indicator light itself is broken, at this time, you can press the projector's on/off key, wait for a while, although the indicator light is not lit at this time, but if the projector can put the picture, it means that the silver indicator light is broken, not that the projector is not powered. Fifth, the internal connection line is broken, and some connection lines are broken, resulting in no power is also a common thing.

Reasons that are internal.

I mind going to an appliance repair shop.

Does the power light not light affect its normal use?

1. If the lamp is not lit but the projection fan can still rotate after the projector is turned on, it may be that the contact is poor, or the bulb is burned. At this time, you can carefully remove the projection bulb first, and then insert it into the lamp holder correctly, if the bulb is on, it means that the fault is caused by poor contact, if the bulb is not on, then you can conclude that the bulb is damaged, and replace one again.

2. If the projector bulb does not light up not long after it is replaced, then it is likely that the quality of the projection bulb itself is too poor, or the lamp is used other than the specified requirements of the projector, or there may be a problem with the power supply, and there is a spike voltage that the bulb can hardly bear. At this time, you can choose a new lamp that is compatible with the projector to try.

The projector indicator light does not light up and cannot be started, and there are generally the following situations:

1.There is too much dust inside the projector, and the filter is blocked, resulting in poor heat of the machine ventilation fan, and the machine will self-protect and automatically power off.

2.If the projector lamp fails or the lamp reaches the end of its life, it needs to be replaced.

3.The projector fan is faulty and the speed is not normal, resulting in shutdown.

4.The projector has a power failure.

5.The projector illuminated version is faulty.

6.The projector motherboard is faulty.

7.Projector color wheel failure, etc. In this case, it is best to find a professional projector maintenance personnel to test, and it is better to analyze and judge specific problems.

Hello dear. If your projector bulb finger pin is not lit, but the bulb itself is on, it may be due to the following reasons:1

Bulb Indicator Bridge Indicator Failure: The bulb indicator may malfunction, resulting in no light up. You can try replacing the bulb indicator or contact after-sales service.

2.Projector malfunction: If the projector itself is malfunctioning, it may also cause the lamp indicator to not light up.

You can try restarting the projector or contact after-sales service. 3.Connectivity issues:

If the projector is not well connected with other devices, it may also cause the lamp indicator to not light up. You can check that the cable is plugged in, or replace the cable. If none of the above methods can solve the problem, it is recommended that you contact the projector manufacturer or after-sales customer service for consultation and processing.

Hello, according to your description, the projector bulb indicator is not on and the bulb is on, which may be caused by the following reasons:1Bulb indicator failure:

The bulb indicator may malfunction, causing it to not work properly. You can check if the circuit of the bulb indicator is working properly, or replace it with a new bulb indicator. 2.

Faulty circuit board: The projector's circuit board may be faulty, causing the bulb indicator to not work properly. You can check the circuit board for damage or short circuit, or contact a professional repair personnel for repair.

3.Projector setup issues: Some projectors may need to turn on the bulb indicator function in the settings, otherwise the bulb will not display properly even if the bulb is on.

You can check the settings of your projector to see if you need to turn on the bulb indicator. In addition to the above reasons, there may be other problems. If you are unable to solve the problem on your own, it is recommended to contact a professional maintenance personnel for overhaul and repair.