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[Miloo]

Where can I get a 68060 cpu socket from, I've tried ebay and various electronics sites but no luck.

I want to desolder my 68060 cpu on my blizzard to allow me to swap cpu's as I want to put a revision 6 '060 in its place.

[Castellen]

If Digi-Key don't have anything, then you can make a socket using 2.54mm pitch single in-line socket strips. e.g. Farnell part number 1218868. I've written a guide on doing this for BGA mounting sockets, but it's a similar idea for leaded sockets.

However, desoldering the existing CPU is a fairly tricky job. The board is at least 6 or 8 layers, if you damage the plating in one hole, which is very easy to do given the fine tolerances of the CPU pins, PCB holes and PCB track widths, then you're stuck with a dead unit. Hot air would be your best bet, but still a bit risky.

Probably not a good idea unless you're well experienced with soldering and you have a good reason for needing to replace the CPU, such as you know the old one is faulty.

[rodney37]

I would have to agree with Castellen about this.

Desoldering the 68060 CPU is a big task with such a rare and expensive PCB, even for experienced technicians. And there is the risk of accidentally damaging the circuit board. True, with hot air you can loosen any 'sticky' pins after desoldering all of them just before dropping the CPU out of the PCB, which is the way to do it of course, but still you are taking a risk doing this since a lot of heat is required to raise all the pins to a high enough temperature.

I replaced the -socketed- 68040 on my Blizzard 2040 with a rev. 6 68060 including the required modifications and found that it still needs some slight cooling air across the bare chip or a passive heatsink to keep it running as cool as you read about this rev. 6 version. Without any air displacement the bare CPU still does get a bit too warm to leave it like that for my feeling.

Of course, had it been a soldered 68040, I would still have desoldered it to gain the speed advantage, however if it already was a 68060, I would have felt it's not worth it. I would have made sure it was sufficiently cooled to keep it at the same cool temp as the rev 6 one is.