Junk Item ✩ YAMAHA AG03 Mixing Console

To be honest!
I spilled drinks on it twice.
The first time, I left it for a few months and it was fixed, so I continued to use it. However, the day before yesterday, I spilled tea, and now there's a crackling noise in the headphones.
I wanted to clean it myself, so I paid 2000 yen at a hardware store and had them open a screw that had been stripped and couldn't be opened with a screwdriver.
The screws on the back can be opened and closed with a Phillips head screwdriver, but I will send it to you with the tape still attached as is.
I had them remove one of the front screws at the store, which requires a 2mm hex wrench to open, and confirmed this. However, I couldn't get enough leverage with my hands, so I gave up on opening the front screws myself to clean it.

It powers on, but please understand that this is a junk item.
The screws are longer than the standard ones, but I will include four screws of the same size and a 2mm hex wrench to open the front as a bonus.
Please take responsibility and bring it back to life.

The YAMAHA AG03 is a compact mixing console compatible with guitar and line inputs, featuring 48V phantom power and effects.

- Model: AG03
- Brand: YAMAHA
- Input Terminals: Guitar, Line, Headset
- Output Terminals: Monitor Out, PC Connection
- Functions: Compressor, EQ, Effects
- Power: 48V Phantom Power

Thank you for looking.