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Except for LCD display technology projectors, the current projector market basically uses DLP display technology, and most of the current home projectors also use DLP technology. DLP display technology is relatively mature at present, but for our ordinary DLP projector users, its internal structure is still very strange, and it will be asked in the projection network forum when there is a failure, so the author collected some information about The principle of DLP projector failure judgment is shared with netizens below.
1. The reason why the DLP projector machine is not powered on
A: the power supply is damaged, and the main board cannot be normally powered. This situation leads to a high possibility of failure to work;
B: the main board fails
2. The reason for the DLP projector light bulb is not bright
A : The light bulb is broken, resulting in no light
B: The power supply of the lamp is broken, it will also lead to no light
C: The motherboard or drive power is damaged
3. There is video, no RGB signal or no video, no RGB signal
A: Generally the signal is live , Poor grounding leads to roasting of the food channel
B: It may be caused by damage to the motherboard
4. Reasons for vertical bars on the screen
A: If there are vertical bars in monochrome, 80% of the LCD plates are damaged, and 20% are damaged driver boards
B: If vertical bars appear in three colors, generally The motherboard is damaged.
5. The brightness of the lamp installed in the projector is not enough.
The reason why the machine with a brightness of 500-800 lumens is darker than before after installing the new lamp. The optical system has fog and dust, which causes light transmittance. Decrease; the brightness of the high-brightness projector is not enough, mainly because the glass sheet of the light is broken, and the light cannot pass through.
6. The brightness of the new projector cannot be compared with the brightness of the new projector because the new projector optical system is new, the old projector is mainly a certain amount of dust in the optical system, or the various parts of the optical channel of the old projector The glass sheet has deteriorated or deteriorated.
7. The image has blurry color spots.
80% of the spectroscope and polarizer in the optical system are damaged.
8. Irregular circles in the image are
90%. The LCD panel is a problem. The situation is mostly
9. The indicator light is on after booting, but there is no boot screen. It
may be a problem with the light bulb, or it may be a problem with the power of the lamp. Disassemble the machine and see if the bulb is broken. If not, check the power of the lamp.
1. The reason why the DLP projector machine is not powered on
A: the power supply is damaged, and the main board cannot be normally powered. This situation leads to a high possibility of failure to work;
B: the main board fails
2. The reason for the DLP projector light bulb is not bright
A : The light bulb is broken, resulting in no light
B: The power supply of the lamp is broken, it will also lead to no light
C: The motherboard or drive power is damaged
3. There is video, no RGB signal or no video, no RGB signal
A: Generally the signal is live , Poor grounding leads to roasting of the food channel
B: It may be caused by damage to the motherboard
4. Reasons for vertical bars on the screen
A: If there are vertical bars in monochrome, 80% of the LCD plates are damaged, and 20% are damaged driver boards
B: If vertical bars appear in three colors, generally The motherboard is damaged.
5. The brightness of the lamp installed in the projector is not enough.
The reason why the machine with a brightness of 500-800 lumens is darker than before after installing the new lamp. The optical system has fog and dust, which causes light transmittance. Decrease; the brightness of the high-brightness projector is not enough, mainly because the glass sheet of the light is broken, and the light cannot pass through.
6. The brightness of the new projector cannot be compared with the brightness of the new projector because the new projector optical system is new, the old projector is mainly a certain amount of dust in the optical system, or the various parts of the optical channel of the old projector The glass sheet has deteriorated or deteriorated.
7. The image has blurry color spots.
80% of the spectroscope and polarizer in the optical system are damaged.
8. Irregular circles in the image are
90%. The LCD panel is a problem. The situation is mostly
9. The indicator light is on after booting, but there is no boot screen. It
may be a problem with the light bulb, or it may be a problem with the power of the lamp. Disassemble the machine and see if the bulb is broken. If not, check the power of the lamp.
