On Wed, 28 Nov 2012 03:53:53 -0600, VanguardLH wrote:

"daytripper" wrote:

On Sat, 24 Nov 2012 23:58:33 -0600, VanguardLH wrote:
[...]
The mobo maker could just make a plastic frame to hold the chip in place
(both for position along with affixing to the mobo via spring clip) and
the user would use a soldering iron with a tip designed for the BGA grid
pattern. The user would buy the mobo they want, the CPU they want, and
then do a one-time solder of the CPU onto the mobo.
[...]

That's some funny stuff right there.

Unless you're serious, of course...

Cheers!

I was serious. You do know what "ball" means in BGA, right?

Daytrip' is quite well acquainted with the technology.

It's a
ball of solder. So why can't the chip, even a CPU, come prepped with
the balls of solder on its pads,

It does. The 'B' thing, remember?

the mobo come with balls of solder on
its grid

It does.

and using feedthroughs so the solder is reached from the
backside of the board, and all you have to do is keep the chip pressed
against the grid, keep it aligned, heat up the solder gun with a
matching grid tip, and just melt all the solder to weld the chip to the
grid?

....and how are you going to regulate the temperature on this mass? It
has to be quite closely regulated.

You've never applied new solder to the underside of a PCB so it heats
the solder on the other side through a feedthrough to use solder wick on
the other side when you cannot otherwise reach the other side with a
soldering iron? Heat travels.

You're assuming a lot of things here; nothing on the other side. A
matching pattern on the other side with vias connecting them, perfect
and matched conduction, and probably a thousand other variables. Might
just as well use a toaster oven.

Of course, we're talking about DIY'ers that know how to solder and that
it flows towards the heat source and what level of heat to apply and not
the boobs that barely know how to push down the level for a ZIF socket.

"Knowing how to solder" has nothing to do with it. This is not a
normal soldering operation.

Not having sockets doesn't mean you can't DIY. It means the DIY'er will
need better skills than pushing stuff into a socket or slot.

It means that no retailer is going to sell this stuff to you.