CM871 ECM failure

[dhirocz]

Well, one of the few parts I didn’t replace during my inframe, the ECM, looks like it decided to quit today.
I’m getting a stop engine light, engine stall, and a flurry of inactive codes, with the active code being ‘ecm power lost with ignition on’. I can start the engine, tap the ecm and it stalls. Likewise, I can tap the ecm with the ignition on and it will cause the fuel pump prime and a number of other things to stop and start all over again. All about the time the engine comes up to temp.
Is there a common failure point in these (ribbon cable, solder joints) that cause these types of issues in these ecms or am I pretty much doomed to a new ecm? It has @m*m^2 in it so I’m trying to be mindful of that when going through my options.