Sub woofer in 2.1 speakers set is making noise?

my sub woofer is making disturbing noise along with two front speakers but when i remove the subwoofer connection from the circuit board then the front speaker aren't making disturbing sound and working correctly ,
recently i changed the two capacitors in the amplifier circuit board, 3300uf 25v capacitors, what may be the problem in circuit board, my circuit board has mainly 3 TDA2030A transistors with heat sink ,2 capacitors 3300uf 25v , four 5392 diodes and many more resistance and small capacitors.
where may be the problem ,which part need to be replaced..or how to solve the problem

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@i replaced that two capacitors coz they got leaked.(2 months ago)and this problem is arising from last few days
@the replaced capacitors are fitted in right polarity
@the disturbing noise means distortion noise like when you play speakers on higher voltage and after that speakers are making that type noise.
@but i checked my speakers and woofer in other system they are working fine without noise there
@that is not burnt sign there , it is sign of some kind of paste
thanks

Sub woofer

Your photo of the board is pretty much useless for us to see anything significant there. Why did you replace the 2 capacitors. Are you sure you replaced them in the proper polarity? Is that a "burn spot" on the left of the board?

What is the nature of the "disturbing noise"?

@i replaced that two capacitors coz they got leaked.(2 months ago)and this problem is arising from last few days
@the replaced capacitors are fitted in right polarity
@the disturbing noise means distortion noise like when you play speakers on higher voltage and after that speakers are making that type noise.
@but i checked my speakers and woofer in other system they are working fine without noise there

thanks