When I istalled my chip, this transistor on the circuit board fell off ( doh) truck still runs but I dont know if its anything very important ...

Where can I get refurbished computers.. its a 99 f250 sd

Thanks

 

Auto-zone carries ECM's, but I don't know if they show one for these later models. I would try to find an electronics place in town the may be able to properly solder yours back together. It will probably be alot cheaper than a new one.
Jimmy