Getting bent (ON topic if not thread) - test-drb@ccmp.vtda.org

13 Mar 1998

The reason why people think it's "illegal" to solder PC parts is
because high temeratures can damage semiconductors, or so it says on
every soldering guide I have ever seen. That's what those heat sinks
are for. Now about the sockets, I'd imagine quite a few SIMMS were
broken trying to fit them in. While mostly, it's easy, I had to
pound on some DIMMS I was installing into 10 Macs recently. By the
way, does anyone want an Orchid RAM expansion board for a PS/2?
Sorry, no driver files or anything. I will give it for free. AFAIK,
it works and has either 1, 1.5, or 2 MB RAM on it.

...

I've seen this stated on several newsgroups as well, but I can't 
understand why it's impossible to solder a new SIMM socket onto a 
motherboard. You can break up the old one, desolder the pins one at a 
time, fit a new one (I've seen them on sale in the UK), and solder it  in. 
...
 Takes about 10 minutes. I've done it before now.

There is a myth doing the rounds that it's impossible to use a  soldering 
...
 iron on PC parts. I don't know where it came from,
but it's 100% false.

BTW, I've seen a few non-name SIMMs with dry joints between the 
surface-mount chips and the carrier board. Resoldering those was an 
entertainment...

Probably more on-topic for this list is a 30 pin SIMM that I have in my 
spares box. It's 256K*9, using pin-through-hole chips (normal 41256  DRAMs 
...
 in 16 pin DIP packages). It does use the normal SIMM
pinout AFAIK. 

I think it came from an Amstrad machine, and I think there are diagrams 
of them in some Amstrad service manuals.

-tony

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