Hi !

Just to add that the SAD MAC code 2 = Memory test - bus subtest

I think that adding a socket changes resistance, so you have to do it everywhere for the 16 chips. That may change voltage.....

Do you found a solution?

....

As I'm starting to do the same thing (one chip F5 is bad = error 04001) I have a decision to take, but I do not have the information needed:

My motherboard is a 128 second generation (design was the same as 512) only ram chips AND another chip AS253.

But I did not find any listing to be sure that all is correct..

Is there anyone knowing what to do for this upgrade?

My actual check list is:

Change 16 chips RAM

Add 1 chip AS253

Add 3 resist. R41,R41,R42

Add 1 C 51

Cut the W1

Is that anything?

Thanks a lot

PS: design of this  card is 128K :630-0101  -  512K : 630-0118