After the notebook external power supply is connected, the power supply indicator light on the adapter is flash, and then there is electricity for a while, no electricity, and the frequency is still fast. The laptop has been switched on and off the battery. The power meter is over connected to the power supply. The output is OK. The battery can open the computer normally, remove the battery, and press the switch. The lights are flashing and there is no reaction. There is no electricity at all. I wonder which hardware is broken Do you want to change the motherboard? The warranty period is over. How many meters will it take to change it?! My Acer 4520G! Beg the prawn to save
It is recommended that you do not switch on the power before you fix the problem, otherwise the power will be burned out. This case is the motherboard battery charging circuit failure, short-circuit, and only to find a professional notebook repair station repair, and this fault repair price is usually within 100 or less. I have been engaged in professional maintenance for 8 years, so I can make sure that there is no mistake
Go directly to the city to sell the computer notebook adapter, said notebook can not open the machine, find an adapter to try, if you can buy a try, no, really is the motherboard problem again to find someone to repair the motherboard repair. This problem can be maintained without replacing the entire motherboard!Adapter price: substitute for about 24-40 yuan. The original may be more than 120, the proposed 3.42A power to buy substitutes like, if it is 4.74A power, buy the original!
I recommend your best plan:After the warranty period is not to go looking for customer service, they are within the warranty period, the warranty service is good, the price paid, maintenance than computer city the most black black is profiteers.
The battery can boot, the motherboard should not be a problem, even the motherboard is also a small problem of the protection circuit isolated by the adapter.But you press the boot button to reflect, you can flash. It is proved that the adapter has been powered by the main board. The standby mode is normal, and the power can be switched on. However, the power has been switched off for some reason.The reason is probably because the adapter damaged power is smaller, the standby power is very small, the adapter can also maintain a boot time, need high power supply adapter can not keep to power down.
I suggest you change the adapter first to see if it is normal and see the motherboard. In my experience, there should be a problem with the adapter or the connection is bad.
