What is the repair method of DVD player
Domestic DVD is accepted by most car owners because of its low price and full functions. They all have a common feature that the failure rate is very high. Generally, after a year and a half or a few months, there will be failures such as failure to read the disc, poor access to the disc, and poor shock resistance.
Maintenance of common faults of domestic DVD: No disc reading
The phenomenon of not reading discs accounts for 85% of the maintenance. Among them, about 45% is the damage of the spindle motor, about 45% is the broken cable of the bald head (difficult to judge with the naked eye), 5% is the damage of the bald head, and the rest is 5%
1. Based on the principle of first easy and then difficult , to see the cleaning of the laser head, first clean the laser head with an alcohol cotton ball
2. Put a disc in, then power off, and dial the disc with your hand to see if it rotates freely and whether there is any lag ( Of course, this is a feeling accumulated from the usual experience), if there is lag or resistance, the spindle motor must be replaced
3. If the disc rotates freely and the inertia is very good, try changing the optical head cable
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4. If the disc is still not read after the above three steps, try another bald head
5. Measure the drive power, check the drive power supply insurance, and replace the drive block
Maintenance of common faults of domestic DVD: poor access to the disc
This phenomenon accounts for 10%.
1. Clean the feeding rubber roller
2. If there is no friction between the rubber roller and the shaft, just wrap the transparent tape on the shaft three times to increase the friction force
3. Another situation is that the disc machine does not convert to DVD state when the disc is placed in the disc inlet, or the disc eject motor continues to rotate after the disc is ejected, and the disc cannot be loaded. This phenomenon is to detect the aging of the infrared light-emitting tube into the dish, and it is necessary to replace both of them. Usually, it is replaced by the remote control infrared tube, but it is not durable.
Maintenance of common faults of domestic DVD: poor shock resistance
This phenomenon is usually accompanied by Reading discs is slow, select discs. Cleaning the laser head can be relieved. If the shock-absorbing glue is broken, of course, it must be replaced.
Maintenance of common faults of domestic DVD: there is no sound fault
What I want to talk about here is that there is no sound in the car, but the speaker wire is normally grounded on the workbench. If you continue to turn on the power amplifier block for a long time in this situation, it is easy to burn out. Most of the domestic machines are double-sided, so the power amplifier block is less soldered.
Domestic DVD common fault maintenance five: Others include panel button damage, panel cable breakage, etc.
These relatively intuitive faults will not be described any more, just replace the relevant parts.
