Only a replacement motherboard can fix your phone now. If all the above troubleshooting steps fail to fix your LG K30/K40 charging problems, your phone must be dead. To get back to the normal mode, follow the below guide – If your K30/K40 is “stuck on firmware update”, the charging icon won’t show up on the screen. Likewise, the cost of 2 charging connectors for K40 is around $7.5 at Amazon.įollow the below video to replace the LG K40 charging port on your own – 8. The LG K30 replacement charging connector comes for around $7 at amazon. To do it yourself, buy a replacement charging port and follow the below video to fix it – Send your phone for repair if it’s under the warranty period. The charging port is connected to the motherboard. A bad charger or water damage can break it. In the majority of the cases, the real culprit is the charging port. LG K40 LCD with Frame comes for around $32 at Amazon. You can get a replacement LCD with a frame for your K30 for around $34 at Amazon. If the phone turns on with a black screen, you need to get a replacement screen to fix the issue. Try to turn on the phone and make note of any vibration, sound, notification light, screen flickering, etc. If your K40 LCD has gone bad, the phone will turn on with a black screen. The OEM LG K30 battery sells for around $13.5 on eBay. The LG K30 battery model number is BL-T36 as shown above. The LG K40 battery model number is BL-T39. You should get yourself a replacement LG K30/K40 battery. Water or physical damage can corrode/break the battery terminal connection. If this doesn’t fix the issue, the battery may be damaged. Switch to another socket and try to charge your phone once again.ĭo you see a “battery with a question mark” on the screen when connected to a charger? Either the Micro USB cable or the battery is faulty.įirst of all, use a different cable to charge the phone. The next thing you need to check for is the wall charging socket. Has the phone started charging? Is it detected by the computer? Also, try to replace it with another micro USB charger.Ĭonnect your phone to the computer via a USB data cable. Try different positions to establish a proper connection. The next thing we need to look for is the proper functioning of the charger adapter/micro USB cable.Ĭheck if there is a loose connection between the charging cable pin and the charging port. We can use this test to troubleshoot charging issues on K30/K40. The charging mode value has changed to “Charging_enabled : 0” So, even though the phone is connected to a charger it’s not charging. In the second screenshot, the charging cable is connected but the charging mode is disabled. ![]() ![]() The phone is charging, as indicated by the charging icon. In the first screenshot, the charging mode is enabled and I’ve connected the phone to my computer using a Micro USB Cable. Scroll down to the bottom and select the last option i.e. This brings us to the Operator Hidden Menu page. Open your K30/K40 phone dialer and dial 277634#*#
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