G7 mouse problem

[insomniac]

after seeing RabidRat's g5 mod thread () i remembered i had a g7 sitting around.. i spilled coffee on the table and the g7 slided across the small puddle.. nothing is wrong with it... just that the cursor doesnt move on the screen.. it moves a little so i think the coffee went inside the hole?

does anyone know how to take it apart/ clean it? thanks and sorry if i wasted your time.

[RabidRat]

Yup. So using your picture as a reference:
-there should be two screws under the left glide pad; peel the pad off, take the screws out
-there should be one screw under the right glide pad; peel the pad off, take the screw out
-there should be one more screw under the information sticker next to the laser lens, totalling four screws on the bottom.

At this point, turn off the mouse, pop out the battery, and click the mouse buttons about 20 times to discharge the caps.

Once you have the screws out, the lower frame of the mouse will lift off the shell in one piece, with a little coaxing.

There should now be couple small black screws holding the battery cartridge holder to the lower frame. Take that out.

There should be a couple small black screws holding the PCB to the lower frame. Once you take these out, the PCB should now come off the lower frame of the mouse. At this point, you'd have to take more pictures and let us know what it looks like, but to summarize:
-if the optics just have some gunk on it, all you'll need to do is wipe off the lens: wipe with rubbing alcohol
-if there's a non-critical short, all you'll need to do is wipe off the gunk with rubbing alcohol
-if any traces are blown (but I doubt it if it's still intermittently operational), you'll need a fine-tip soldering iron, solder, thin guage wire, and a steady hand
-if any IC's are blown (again, doubt it if it's still intermittently operational), you'll have to desolder and resolder a replacement; I can poooossibly help you source an equivalent off a supplier, but depending on what you blew, we might need to flash firmware onto it, which A)I may or may not have the programmer for, and B)Logitech almost definitely does not release their source freely. So we'd have to find you a donor G7 - Maybe !Mikroft. Lastly, almost all the components are surface mount, so again, you'd need a very steady hand.

With all that said.

If you can't fix the mouse despite any help we give you, and it's out of warranty and Logitech won't replace it, consider donating the mouse to me for spare parts on my G5 build. =)

[underscore]

first thing I'd try is taking a Q-tip dipped in rubbing alcohol, and try to clean off the lens for the laser that you can see there through the hole. if that doesn't work THEN take it apart.