PMGR replacement compatibilities

[MacPlus2300]

I’m trying to replace the power management chip in a sure m5126 Macintosh portable, however the one I got to replace it was also dead. Does it have to be from a portable or PowerBook 100? Can it be from a later model board, or is it not compatible with the original generation or series?

 

[David Cook]

Yes, I'm sure. I have in fact moved a power mgr chip from a PowerBook 100 into a Portable and had it work.

Have you tried the trick of holding down the interrupt and reset button for 5 seconds, releasing, and then pressing a key on the keyboard. I have two boards that struggle their first cold start after being stored without power.