Samsung J720F Charging Problem Ways Solution – USB Jumper

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Samsung J720F Charging Problem Ways Solution – USB Jumper

Samsung Galaxy J7 Duo J720F Charging Ways, USB Not Working Solution Slow Charging

In this post, we will guide you on how to repair Samsung Galaxy J7 Duo J720F smartphone that’s not charging or won’t respond when connected to a charger. So, if you are currently having this problem, continue reading to learn the steps to rule out possibilities to discover what the problem with your phone really is.

It is important that your #Samsung J720F is charging properly because if not, you won’t be able to use it when it runs out of battery. We, however, have already received a few complaints from users whose brand new phones aren’t charging. Others reported theirs aren’t charging properly while some said their units won’t fast-charge at all.

As technicians, we already have the troubleshooting procedures that we follow when trying to fix problems we don’t know what the cause is. So, if you simply told us that your phone just stopped charging one day without apparent reason, then we suggest you follow our troubleshooting guide below.

Other reasons why the Samsung Galaxy J7 Duo J720F not charging may be:

  • The Smartphone is defective
  • The phone has a damaged battery
  • The connector is bent, broken or pushed
  • There is a temporary phone problem
  • The charging unit or the cable is defective

So if you are experiencing any charging problem or problem connecting your Samsung Galaxy J7 Duo J720F to your computer via USB cable then it is possible that your Samsung J720F charging connector is faulty. Replacing it with a new one is the only solution here. But if by any chance the USB connector prints are broken then you have to make the jumpers as shown in the diagram below.

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Samsung J720F Charging Ways USB Jumper Solution:

Here is Samsung J720F Charging Ways Not Charging problem solutions. Please study these diagrams very carefully before you start repairing them.

Samsung J720F Charging Problem Ways Solution USB Jumper

Image Source: HalabTech.com

Check Charging connector for any kind of water damage, if it is then clean it and check.

Now re-solder charging connector pins and check.

Check to charge voltage with the help of a multimeter. Place Negative terminal of the multimeter on the ground and Positive on a charging pin (1st pin from your left-hand side).

Make sure that the voltage is between 5V to 5.5V, if it is not then replaced charging connector. (Charging Connector can be replaced by heating it from the opposite side of the board, while heating it, pull charging connector with the help of Tweezers).

Now remove metal sheet covering the charging section (It contains Charging IC and Components).

Check continuity between Fuse and Charging Pin (1st from your left-hand side). If there is no continuity, place jumper.

Also, check the following, and replace them if damaged:
Fuse
Capacitor
Coil

Heat charging IC, if it is faulty then replace it.

Now check charge at the battery terminals, if it is not standard voltage then re-solder or replace battery terminals.

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