Computer lamps are an important type of lamps. In performing arts activities, it plays a role in setting off the atmosphere, rendering the stage mood, and mobilizing the mood of the scene, so it is widely used.

Computer light is a kind of more sophisticated equipment. It integrates electronics, machinery, and optics. It has high requirements on the environment, transportation, and use, so its failure rate is also high. Here is an analysis of the possible causes based on the failure phenomenon, for the reference of relevant personnel.

No response at boot

1. Whether the power supply is normal and whether the power cord of the lamp is off;

2. Whether the fuse of the lamp is burned out;

3. Whether the switching power supply of the lamp has an output voltage.

The bubble does not turn on when it is turned on

1. First judge the quality of the bulb, whether the distance between the two poles in the bulb sphere is too long, and whether there is air leakage (a milky white inside the glass bulb), and check whether the bulb is loose.

2. When confirming that the lamp is in the state of ignition, measure whether the output voltage of the main board is normal. Normally, the voltage is generally 10-12 volts.

3. If the above two points are correct, measure whether the electronic ballast has an AC voltage output of about 380V at the moment of tapping. If there is an output, it indicates that the ballast is good, so you can directly determine that the trigger has a problem.

After starting up and working for a period of time, the lamps automatically reset

1. The output voltage of the switching power supply is unstable;

2. The wire in the line is loose or the wire is not pressed tightly, resulting in poor contact and automatic reset.

The bulb automatically extinguishes bubbles

1. The bulb is out of bubble, and then turns on automatically after a while, check whether the heat dissipation system is working properly, if the heat dissipation system fails, the temperature inside the lamp will be too high, and the temperature control switch will automatically trip to ensure the safe use of the lamp. When the electronic lighting is turned off, the lamp will automatically light up when the temperature of the lamp body drops.

2. After the bulb is extinguished, the bulb cannot be automatically lit: the bulb itself is a problem, the bulb sphere surface is white, the inside is black, and the bulb will be extinguished after a period of time (the bulb life ends).

3. When the lamp has no control signal for a long time, the automatic protection of the gun will also appear, and the light will be automatically turned on after the signal is turned on.

Stuck, jitter, and out-of-step in the pattern plate, color plate, prism, focus, and zoom

1. The jam is generally due to mechanical reasons (except for CMY color chips). When a piece of CMY color chip is broken, it will fall off, which will affect the normal operation of other color chips. At this time, the phenomenon of color chip jam will occur: such as Deformation of the pattern wheel, color wheel, loosening and falling off of the fixing part screws, ejection of the compression spring of the fixed pattern, etc., will cause the jam.

2. Jitter and loss of synchronization: the screws are loose or fall off, the chips of the channels on the motherboard are burned out, the motor wires are poorly contacted, the broken skin is short-circuited to the ground, and the motor itself is faulty.

Horizontal and vertical (X/Y axis) out of step, no positioning

1. There is too much dust on the light lotus root, which makes it impossible to control the infrared light;

2. The light lotus root plate is damaged, and the distance between the light lotus root plate and the light lotus root plate is improperly adjusted (when it is excluded, the light lotus root plate should be in the middle of the light lotus root plate, and there is no scratching, bumping, or bumping phenomenon);

The above is the analysis of the causes of some common failures. In fact, to reduce the occurrence of failures, normal maintenance is essential. The following briefly introduces a few items that need to be paid attention to in daily maintenance:

1. For optical components, first use a vacuum cleaner or blowing air bag to gently blow off the surface dust, use an odorless tissue paper or a cotton cloth soaked with clean water to wipe off the particles, and use a cotton cloth soaked in ethyl propanol or an odorless paper to remove the dust and residue. Use distilled water for the final cleaning, and then wipe dry with a soft cotton cloth;

2. Parts with coated color sheets, gobos and optical lenses, because the surface of the coating layer is very brittle and easily scratched, so do not use destructive solvents for cleaning;

3. Frequently replace the air filter cotton to keep it in the best ventilating state and enhance the heat dissipation of the lamp;

4. Computer lights should be handled gently to avoid collisions, falls, etc.;

5. Be careful not to use it in places with a lot of wind, sand and dust;

6. The power supply voltage should be stable, and the long-term power supply voltage should be around 240 volts, and a regulated power supply should be considered;

7. After the performance, use the console to extinguish the bubble, and let the lamp continue to work for a period of time without cutting off the power supply (let the fan in the lamp continue to work to reduce the temperature inside the lamp);

8. After the liquidity performance is finished, it must be put into a special air box to prevent moisture and shock, and the fixedly installed computer lights must be dust-proof and shock-proof.