How to fix broken SIMM sockets in the Amiga 4000
Posted by Retro Amiga User under Amiga 4000Comments Off
Sat 16 May 2009
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.
There is an easy solution to this problem, send the motherboard to someone who can replace the cheap all plastic 72-pin SIMM sockets that brittle with time with some high quality plastic/steel sockets that works great.
Or you could do it yourself if you have the right equipment.
However, think about it. How often do you replace the memory on the motherboard. You will never replace the 2 MB SIMM, and you will never replace the 16 MB memory (4 x 4 MB or 2 x 8 MB SIMM) there if the memory mounted are stable running and works fine.
I guess you could read my mind.
-Yes, I was thinking of hot-glue
Actually it was not me who came up with the idea, I got it from another Amiga enthusiast. I thought it was a horrible low end, ugly, redneck solution to the problem, how wrong I was.
Now that I have added two small dabs of hot-glue to the side of each 72-pin memory nobody will notice it and it does not look ugly at all.
And if you decide to go all the way replacing the horrible and cheap Commodore plastic SIMM sockets with high quality industrial quality 72-pin SIMM-sockets it wont be impossible to remove the memory as the hot-glue is relatively easy to work with even when it has hardened.