[sdiy] OT Intellimousing frying

[Ben]

With the idea of organising my life a bit better (in theory anyway), I built
a second computer for myself. I bought a new Logitech cordless keyboard
and optical mouse for my main box, and opted to put my trusty MS
Intellilouse
and original keyboard on the other machine. An easy task, turned into a bit
of a nightmare.

I had to buy a USB header to USB socket backplate for the motherboard, as
it didn't come with one. I simply plugged the socket in with the red wire
lining
up to the "1" marked on the mainboard. Well, I had a 50/50 chance of getting
it
wrong, and it most certainly was wrong. The moment I powered up the machine
I could smell something nasty. Yes, that familar "I've obviously done
something
wrong" smell. I quickly turned the PC off, and swapped the plug on the
mainboard
around. The mouse still lights up, the optical sensor obviously still works
because
the LED shines brighter when its put on a surface (as it originally did). I
suspect
the processor is fine too if its still doing this. Pulling the mouse apart
revealed that
a surface mount resistor (R25) is burnt to buggery. So I'm guessing I might
just
be lucky if I can replace it.

But I've got no freakin' idea what the value of this resistor is. I can't
find a schematic
anywhere on the web. Does anyone have a spare Intellimouse lying around that
they
could measure the resistor for me? I'm probably clutching at straws here,
but before I
go and buy a new mouse, I thought would be at least worth a try :)

Sorry for the wasted bandwidth... any comments/flames appreciated!

~Benjamin
Adelaide, Aus.