B button non working

[rafaliyo86]

Hi guys

I bought a cheap controller (CG version)  from a guy who told me that B button didn´t work. I have opened the controller and I have realized something the guy didn´t told me. I think he tried to do a scuf (duplicate A and B) that was also my intention but once I checked the point I didn´t see anything rare. I took a pic and if I do zoom I believe that traces are togheter. The A button works perfectly but B no. Here are some pics of the traces




do you think is this the reason (me yes)? is there any way to fix the traces?

Thanks in advance

[Gizmo613]

Scrap off the trace a little and add solder from the bias to the trace. To me it looks like the bias is disconnected from the trace.

[rafaliyo86]

I will try it. The strange thing is if I take a cable from an alternative B point and I make contact on A pad it has the function (of A) thats the reason why a I think A and B are connected between them

[Modded Matt]

Thats a bad deal. The VIA (a connection through the PCB to another layer/side) is gone completely.  This via in particular is important because it is the last spot to get the A button before the MCU. So with those being bad, the only way to fix it is to solder directly to the MCU.  This will require excellent soldering skills to correct. I have circled the spots you need to connect.







The buttons are CG or common ground. So the A and B spots are live inputs, so if you touch them together you are causing a short. The A spot (top of the button pad or anywhere along the trace/via) connects to ground (the bottom of the button pad or any ground spot ont he controller, hence common ground) to activate

[WHITE 4ND N3RDY]

Yea looks like he murderd those traces! No room for error soldering to the MCU! Might want to get some of that desoldering braid incase the solder bridges the other fingers of the MCU. Let us know how it goes!