2nd hand A4000 does not show Fast Mem. How come ?

[TjLaZer]

Sounds like you have some traces bad.  I had a leaky batt in my 4000 and it was very minor but the RTC was dead due to some traces corroded, but RAM is ok.  Since the SIMM slots are real close to the batt this may be the case for you.  Good luck.

[TjLaZer]

@Effy!

You said the battery was not leaking or at least not much. Well my batt was leaking very very little and it killed traces to the RTC which I repaired.  It does not take much acid to ruin the 4000!  On the 2000 it is a different story!  I had a batt leak all over the place and was very furry!  After the new batt install everything was fine!

[TjLaZer]

@Effy

Don't be stubborn. Your slightly leaky battery has cause corrosion and ruined some traces to your SIMM sockets.

[TjLaZer]

@Effy

Yeah I know. But it seems you have done a good job troubleshooting.  It seems the SIMMs sockets are not registering the RAM so a trace must be broken.  You could always send it off to Amiga.fr to get repaired.  They are reasonably priced and very fast!!  I had them repair a dead 4000 MB recently and I got it back in 3 weeks!  Or you can try to fix the traces if you have the skill.