Sony a6300 after shutter repair

[dev001]

Hi,
I have got a6300 which shutter stopped working. I managed to change shutter but unfortunatelly broke shutter motor tape but I fixed that. After repair the shutter is working but not in a proper way, watch with sound.

I bought the second shutter and tried to test it before dissaembling again and it doesn't react to magnet but it works fine when I apply 3V. Are there different type of shutter for a6000 - a6400?

Back to the question what is wrong with my shutter after first repair? I don't want to put next shutter unfoundedly. Do your sony cameras perform such a self-check after start up?