Here we go.... (48G fixing and MEMORY UPGRADE)

[lemontea]

Ok folks, there's a lot to update.

I will do it gradually one post at a time for each "stage" I have gone through...

It has not been easy!

Please take a look at the photos (it's also annoying I have to resize them but the thing I would prefer most is being able to put them inline, so it is easier for you guys to refer to as I go along describing the process).

Anyway I opened up the top half where the keypad and LCD reside (basically, removed the PCB).

It's not easy to twist those metal tabs, and it is also not easy to prevent the PCB dust. In fact in retrospect now I think one should wear a dust mask doing this (because you probably will be putting the PCB on and taking it off again several times to test things, and every time the metal will scrap and produce some fiberglass dust). This dust mask is in addition to standard eye protection.

So as you can see, there's corrosion at the keypad contacts.

I cleaned with isopropyl alcohol wipes, and some q-tips.

The oxidation or whatever on the copper pads, I tried to scrap a bit to make it more conductive. You can see the attempt in the photos.