Mobile speaker light on does not sing no response may be due to the following reasons:
Mobile speaker battery power is insufficient to lead to no response to the phenomenon, when the charger is damaged, rechargeable batteries deterioration in the performance of the charging capacity, forgetting to charge, etc. will lead to the speaker on the unresponsive;
This type of speaker for the insertion of cards
This kind of speaker is plug-in card playback mode, when the memory card itself is faulty or memory content is damaged, incorrect file format, card slot damage, digital decoder board damage, etc. will lead to normal playback of music;
Speaker speaker unit burned will also lead to playback of unresponsive phenomenon;
Speaker amplifier circuit within the components of damage, such as damage to the preamplifier chip, amplifier chip is damaged, etc. will lead to playback of unresponsive
Speaker gain potentiometer, volume potentiometer damage caused by playback unresponsive.
Response to the above situation corresponding to the solution:
Check the speaker's rechargeable battery power, if insufficient to test the charger is good, such as damage to replace in a timely manner; if you forget to charge in time to replenish; if the battery charging performance deterioration should be replaced in a timely manner with the original specifications of the battery pack; if the machine is the charging control circuit failure need to ask a professional maintenance personnel to repair Failure of the charging control circuit within the machine need to ask a professional repair personnel to repair, generally more than the voltage comparator is damaged or current-limiting resistor burned, according to the prototype number can be replaced;
Check the memory card on the file is consistent with the product format, if the format is not right in time to convert the relevant conversion software for conversion; check the memory card itself is still able to read and write, if the damage is replaced in a timely manner; check the card slot if there is a false connection, welded in a timely manner, if damaged and replaced!
Check the speaker unit, whether due to overload and burnt, if damaged, direct replacement of the original specifications with the same power and resistance of the speaker unit can be damaged;
The speaker unit can be replaced directly with the original specifications with the same resistance;
The speaker unit can be replaced directly with the original specifications with the same power and resistance;
The speaker unit can be replaced directly with the original specifications with the same resistance. There are circuit failures within the speaker, which need to be repaired by professional maintenance personnel. Detection of the corresponding chip and electronic components, for the corresponding damage to the replacement of accessories. Generally common failure for the amplifier chip damage or split amplifier tube burned, direct replacement can be;
Test gain potentiometer and volume potentiometer, whether there is a carbon film fracture, if there is a direct replacement of the same specifications of the same resistance of the potentiometer can be.
Note: Because mobile speakers are mostly used for square dancing, they are subject to different degrees of transportation vibration every day, which can easily lead to internal circuitry, open welding, loose terminals and so on. Therefore, when the failure occurs, the user can first carefully check the machine connectors and circuit boards whether there is a false connection, weld, such as directly with a soldering iron to make up the welding can be. At the same time, daily transportation, use, try to avoid severe vibration.