Samsung SM-J700H Volume Button Problem Volume Key Ways
Here’s the connection line paths for Samsung Galaxy J7 J700H that may useful in troubleshooting a not working Volume control both UP (+) and DOWN (-) button switches. This shows the connection line paths (jumper ways) specially when trying to fix the button switch if severely damaged or the PCB solder pads has been already lifted. You may use a multimeter to trace each of the volume button keys terminals connection across to a components where it is being connected. This solution may also work with Samsung SM-J700H phones.
To fix this problem you may first visually check the button switch assembly for possible damaged. Just replace it, and carefully re-solder it without lifting the PCB board terminal solder pads.
If the said switches assembly seems okay but it still it does not respond or work. Refer to the solution above and locate the highlighted component on the PCB board.
Samsung SM-J700H Volume Up Down Button Solution
Samsung Galaxy J7 J700H Volume Key Ways,Jumper, problem, Solution, Volume Up-Down Button Ways
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