Compaq Portable 386 Question

[Choctaw Bob]

I have one of the above that is giving a 102 error, meaning the system 
board is toast.  Any suggestions on what to do?

I do have a couple of Portable III's so could possible use some of the 
parts, but see no way to reasonable revive the beast.

Next project is to revive a Wang portable(sans power supply), or maybe a 
DEC Rainbow (sans monitor and keyboard). 

Would a Decmate keyboard and monitor work with a Rainbow?