Have you ever met mobile phone motherboard faults? Users who have phone repair tools to disassemble the phone can refer to the following points to determine whether the motherboard is broken:

1. Look at the appearance: severely deformed, some chips have been burned, and surface electronic components have fallen off.
2. Power on: Connect the ammeter to check the current. The current of normal startup is regular. If there is no current or there is a large current, then there must be a problem with the motherboard.

If the phone was dropped, follow the steps below:

1. Turn on the machine after cleaning the foreign body; there is a display, a voice, and a phone call. Mobile phones have repair value.
2. There is no response when the button is turned on, you can also do it again according to the above steps.

These steps are the check methods for abnormalities in mobile phones under normal circumstances:

1. Take out the battery first, and if possible, replace it with a spare battery and turn it on for inspection (don’t do this if the phone is flooded with water).
2. Check whether the buttons of the mobile phone are stuck; whether the battery is in good contact.
3. Take out the memory card and number card.
4. Connect the computer with the original data cable.

More repair tutorials please contact us from www.vipfixphone.com