No headphone detection, static sound on left side

Hello,

I have Sony Xperia X compact.

Recently I was trying something with 3.5mm cable.

I plugged 3.5mm cable from my phone to faulty hi-fi system. There was probably electro shock and now my 3.5mm jack wont recognise headphones.

Also there is static sound on my left speaker of headphones when I plug my headphones (I tried other headphones).

Replaced 3.5mm jack on my phone but problem still remains.

Music normaly plays through speakers of my phone. Means that audio chip is fine, I think.

Anybody knows what I can do except going to repair man? I dont have warranty & guarantee.

Thanks