StreetFighter 2 Bootleg Repair

[DeltaWaldo]

Hello all,
I am having trouble with a Streetfighter 2 bootleg I just got. When I was inspecting, one of the regulators fell off. Can't find it but I think on the board it says 'T518'. I replaced with a T518B from ebay. When I hit the service button on the super gun I get a chime so I think everything is working? Please confirm that it's the proper chip. (Pictures show the PCB+supergun and zoomed in on the chip that was changed out, part of the silkscreen has been rubbed off). I think it's a mstreet variation, does anyone know if I have the right chip? Also thinking I might need to add more solder to the super gun port.

 

[DeltaWaldo]

Also noticed these chips are damaged should I replace?

 

[caius]

'T518' is PST518, a voltage monitor widely used for CPU RESET generation on arcade boards.

https://pdf1.alldatasheet.com/datasheet-pdf/view/87725/MITSUMI/PST518A.html

 

[DeltaWaldo]

Thanks, definitely got that one and was able to trace it so that can't be it. So funny thing, back when I first plugged in my Power Supply I had it set to 220 but with standard 110 supply. Did I burn out my board and supergun? I did switch the supply over to the correct voltage. The 12v rail is running a bit high (13v)