PS4 Display Issue After HDMI Change

It all started when my baby brother pushed my ps4 off the table. As a result, the PS4 was turned on but with no display, it was clear that the HDMI port was damaged. I then brought it to a ps4 repair man in my country. He said the HDMI port and the IC needed changing. After changing the HDMI port and the IC he started to get visual but there are a few black lines showing like there’s a distortion or short somewhere.