iPod won't connect to computer/iTunes and doesn't indicate charging

I replaced the hard drive in my iPod late model classic with an iFlash micro SD card. The old HD was definitely bad. Now when I plug it into a computer or charger nothing happens. It plays fine and traverses the menu with no issues. I was able to get it to connect to a computer a few times by rebooting it while it was connected via USB. The battery would show no charge if it was used for a while and if left on a charger it would charge the battery back up overnight. It does not brighten the screen when plugged in as it used to and doesn’t show it is charging. I replaced the battery thinking that was the issue but it did not help. Just trying to confirm if this is definitely the logic board at fault here.