Here’s the solution that shows the connection of the Samsung SM-G313H volume control button switches.
You can use this solution if the said button switches are not working or if you need a jumper solution.
The solution may help repair and fix Samsung Galaxy Ace 4 SM-G313H Volume Button malfunction and button switches failure. You may check, trace particular keys which are not able to function by using the repair guide below. Each group of colors indicates that they are connected with each other. So just locate where that particular non working key being connected and mend it found cut or open.
If volumes are not working we will not be able to volume up or down we also can not use keypad if keypad lock button is not working in Samsung G313H.So look at above diagram and clean all these parts that are given in it.
Apply heat to so that it can be dry for a few mint.Do not apply much heat because it can harm your skin and may can damage mother board also.
Check all these tracks that are given in repairing diagram and if any of them is missing apply jumpers as shown in it.If any button switch or part is damage you can replace it with new one.
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