Microlab FC330 Subwoofer won't work

Hi guys, i've got an Microlab FC330,
They just stop working. Aty first one MOSFET in power PCB didnt work properly so i take care of it.
Now subwoofer won't work, but speakers works well. my guess is a transistor c1858 <datasheet here https://pdf1.alldatasheet.pl/datasheet-pdf/view/30084/TOSHIBA/C1815.html > but i'm not sure with this, could you give me some tips, what to check?
Thank for Your guidiance,

IMG of pcb:
https://imgur.com/a/Jz50R
https://imgur.com/a/2C8u3

So. i've changed c1815 and checked tda2030. still only speakers works, subwoofer not. have somebody any ideas?

This:


Looks like a non-soldered pin.

Your link is to an op-amp, not a mosfet for what its worth. Those 5-pin devices are not likely to be mosfets. Is that what you replaced?

No, Mosfets was in power supply pcb, this pcb is from speakers and sub. Previously my father replaced this amplifiers, it's horrible looking but conections are good i check them with multimeter.
Also this TDA2030 are in good condition, i've checked it too.