I guess broken SIMM sockets in the A4000 is no news for most Amiga enthusiasts these days. You rather expect a second hand Amiga 4000 to have broken SIMM sockets than not.

The kind of SIMM sockets used in the Amiga 4000 is all plastic, the little tabs holding the SIMM secure has a bad habit of breaking off, meaning the 72-pin memory SIMM is only held down with one tab or in my case, with no tab at all since both where broken off.

The previous owner of this A4000 motherboard had come up with a genius solution of making a cardboard lasagne above the 72-pin memory and below the lowest Zorro card, a solution that -incredibly- worked stable but did not look so good.

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