source:Charger Popular:adapter release time:2021-04-12 09:53:13 Article author:sznbone
Charger repair and maintenance
1. Repair
(1) The power indicator light is on, and the charging light is off, so there is no way to charge. Most of the problems of this kind of failure are caused by abnormal operation or failure of the charger switch to oscillate and block the road. After the charger is disassembled and overhauled, it can be found that the switch tube VT2 and resistor R6 are damaged, and the fault problem can be solved by only replacing the damaged switch tube and resistor. In general, because the mobile phone lithium battery charging circuit has a low operating voltage, the probability of component damage is low, that is, the probability of damage to the circuit after the secondary of the switching transformer is low, and it is generally not damaged, and it is not the key to fault detection.
(2) The indicator shows under normal conditions, but there is no way to charge or the charging efficiency is low. The occurrence of this kind of failure problem is generally that the triode is damaged, and the failure can be eliminated by replacing the new triode. If the transistor does not fail, the voltage across the capacitor (100μF/16V) must be measured. Under normal circumstances, the DC current is roughly equal to the parameter standard (about 8.5V). If the voltage is normal, check the resistance or integrated block, and analyze whether the integrated block data meets the parameters under normal conditions. If the voltage is low, measure the secondary output voltage of the switching transformer (normally around 5.5V AC). If the voltage is normal, it means that the capacitor and rectifier diode are damaged; if the voltage is low, the switching transformer and the previous components may be damaged.
2. Maintenance
(1) Cleaning. Because the charging port is likely to accumulate dirt, some users have the habit of regular cleaning. At this time, you should use a damp cloth or an anti-static cloth instead of a normal dry cloth, otherwise static electricity is likely to break down some circuits.
(2) Waterproof and moisture-proof. Although many mobile phones support IP68 and IP6X dust and water resistance, the charger is not waterproof. Accidental water intake or prolonged exposure to humid air will cause different degrees of oxidation and corrosion problems in the electronic components in the charger.
(3) Anti-drop and anti-vibration. The charger is very fragile, and the internal components are very delicate, so avoid dropping or violent vibration, or it will damage the internal circuit board.
(4) Anti-cold and anti-heat. During the charging process of the charger, some of the electrical energy will be converted into heat (loss). At this time, the charger will heat up. If the charging environment temperature is too high, it will further shorten the life of the charger and cause serious damage. Do not place the charger in a cold area, because the temperature rises during the charging process and the surrounding air is too cold to generate moisture, which may cause corrosion or short circuit of the circuit board.
(5) It is strictly forbidden to contact with strong chemicals. Do not clean the charger with only strong chemicals and detergents. If you want to clean the surface, you must carefully wipe it with cotton dipped in a small amount of absolute alcohol.
Read recommendations:
3-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
Popular recommended products
200-500W Switching Power Supply
2020-08-2924-65W Switching Power Supply
2020-08-2912V2ASwitching Power Supply
2020-08-28MKD-571202000 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-28EI-66 ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-28EI-48 ADAPTER LINEAR ADAPTOR Switching Power Adapter INTERCHANGEABLE ADAPTOR Linear Adapter
2020-08-28EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-28EI-35 ADAPTER AC ADAPTER SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28ER42 High Frequency Transformer
2020-08-2712-36W POE POWER SUPPLY
2020-08-27Transformer,Power Transformer,Ring Power Transformer
2020-08-27Transformer,High Frequency Transformer,Frequency Transformer
2020-08-2712-24W Medical Switching Power Supply
2020-08-273-12W Medical Switching Power Supply 3W Switching Power Supply 12W Power Supply
2020-08-2745W PD Charger,45W Charger,PD Charger
2020-08-2736-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
2020-08-2724W USB Charger,24W Charger,USB Charger
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-2730-500W LED Power Supply 30-500W Power Supply
2020-08-27Related Information
Know the power adapter and break the lies of high-speed chargers
2021-11-08Can the power adapter be universal?
2021-08-20How are electric car chargers classified?
2021-08-20How to use the computer power adapter
2021-07-31Introduction to the three major issues of the power adapter
2021-07-31Do you know what are the main forms of switching power supply?
2021-07-15Will using the car charger harm the phone?
2021-07-15Do you know what are the main forms of switching power supply?
2021-07-14Will using the car charger harm the phone?
2021-07-14How to classify the power adapter?
2021-07-13What should I do for charger troubleshooting?
2021-07-13How to fill the power adapter with glue
2021-07-10What is the role of the varistor in the power adapter, the charger manufacturer will share with you
2021-07-10How to carry out the aging test of the finished power adapter, the power adapter manufacturer will s
2021-07-10What are the important components in the power adapter
2021-07-10Do you know the types of mobile phone charger ports?
2021-04-24What is the cause of the liquid flowing out of the charger
2021-04-24Classification and characteristics of chargers
2021-04-14Make your own USB mobile phone charger
2021-04-13Charger repair and maintenance
2021-04-12Charger principle
2021-04-12What is the prospect of scanning the charger and how to cooperate with the hotel?
2021-03-12How to realize the miniaturization of fast charging chargers, the flat transformer is the breakthrou
2021-03-12What is the cause of the liquid flowing out of the charger
2021-01-08Precautions for charging mobile phone chargers
2021-01-08Popular recommended products
EI-41 ADAPTER AC ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Adapter
2020-08-28MKS-120200BS-36 Switching Power Supply
2020-08-29MKD-571202000 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-283-15W Switching Power Supply
2020-08-28MK-C1806028 MKA ADAPTER LINEAR ADAPTOR SWITCHING ADAPTOR Linear Power Adapter Linear Adapter
2020-08-28MKS-1401700H Switching Power Supply
2020-08-29EI-48 ADAPTER LINEAR ADAPTOR Switching Power Adapter INTERCHANGEABLE ADAPTOR Linear Adapter
2020-08-28QC3.0 24W USB Charger,24W USB Charger,24W USB Charger,USB Charger
2020-08-2724V1.5A 36W Switching Power Supply
2020-08-2912W POWER SUPPLY,12W CAR POWER SUPPLY,POWER SUPPLY,CAR POWER SUPPLY
2020-08-27MKS-1202000-36 Switching Power Supply
2020-08-2924W USB Charger,24W Charger,USB Charger
2020-08-2724W 2USB Charger,24W Charger ,2USB Charger
2020-08-27Inductance & Coil
2020-08-2712-36W POE POWER SUPPLY
2020-08-27500W Charger,Charger
2020-08-2818-25W Switching Power Supply
2020-08-2824V21A LED Power Supply 24V Power Supply 21A Power Supply
2020-08-27MKS-120200EU-36 Switching Power Supply
2020-08-29Transformer,Power Transformer,Ring Power Transformer
2020-08-2710-24W Charger,24W Charger,10W Charger
2020-08-27EI-57 ADAPTER LINEAR ADAPTOR Linear Power Adapter Switching Power Adapter INTERCHANGEABLE ADAPTOR Li
2020-08-2836-90W Charger,36W Charger,90W Charger,40W Charger,50W Charger
2020-08-27100-300W Charger,100W Charger,200W Charger,300W Charger
2020-08-2730W PD Charger,30W Charger,PD Charger
2020-08-2712V2ASwitching Power Supply
2020-08-28EI Power Transformer Power Transformer
2020-08-27MKA-571652420 ADAPTER AC ADAPTER CE ADAPTOR UL ADAPTOR Linear Adapter
2020-08-2824-65W Medical Switching Power Supply
2020-08-2772-200W Switching Power Supply
2020-08-29