When car starts stays at 1500 rpms then when I shut off after started won’t start

[tyler_svt4]

I have replaced distributor replaced ccrm checked all fuses all wires no vacuum leaks have checked everything I possibly can and sometimes my fan and fuel pump would randomly turn on when the key is on
So I am thinking my ecu is the suspect so I took it apart and everything looks fine except this one spot does this look burnt to you or do y’all have any idea