Chosen Solution

My fully working A1106 1.67Ghz Powerbook has a dead RAM slot- I sourced a replacement tested logic board (very cheap!) but since discovered it is for an A1138 model. Is this at all compatible with the 1106? -TIA

Sadly, I doubt anyone would have tried that still active here on iFixit. Here’s the guides: A1106A1138 I would review them to see what’s different.