Lm1036 problem

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I brought a lm1036 tone control for my tpa3116
And one channel works well but the other channel doesnt. I can adjust the bass and volume but when it comes to the treble control
Nothing happens, I swap around the left and right speakers then it work but now the other channel won't work.

Any ideas?
 
I think that your right.
I looked at c3 at pin out 3 and it wasn't soldered very well.
And I tried to solder it back on and it fell off and I lost it.
Bugger.
Can't get those caps in NZ so ended up getting a hole new board but I told the seller about it and he gave me half price. So a new board should fix this problem.

thanks
 
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