mikebmw77

I opened it, and everything looks fine, it does'nt smell burned. ...... My question is : how to fix it ? .

Hi guys, I bought a used non-fonctional sub-12. The blue light is on and I have no sound coming from the sub, if I rev up the volume on my receiver to the mmax, you can barely hear the bass from the sub. Like you realy have to focus the hear it. I tried another sub on my reciever and it works fine. I tested the sub only, without the amp on the front right speaker channel and it worked, so the problem is from the amplifier (bash). I know it's easy to replace it but I would like to repair it myself. It's like a hobby for me. Thank you for your help!