Staigen said:
So folks, which is what? Maybee we all are right?
//Staigen
i guess that could be the conclusion.. so, should i stop printing leaflets about our campaign ;D

technically, Staigen is right.. CPU is the IC.
let's get back to my speaker.. after i got home last night, i immediately examined the parts.. i really didn't see anything suspicious.. still no busted components of burnt siwtches.. so, after doing that, as instructed, i got the screwdriver to do some testing.. when i was to plug it, i noticed that the female plug has a trace of "explosion" (arrow in the diagram) my plug and wire is white so i can see clearly that there are burn marks on them..
it used to malfunction the first few days i have it.. it doesn't perfectly fit my adaptor (its terminals are flat), its loose.. i bent its terminals in any direction but to no avail.. anyway, i can still position it in the right way that it works fine.. but a little nudge will cause the plug and its adaptor to disconnect.. maybe in that process of bendig its plugs, i damaged it..
but still my mother insists that the spark came from the speaker.. lets say,the two terminals of the plug touched each other, what would happen? it's a short circuit, right?
oh yeah, it have a little transformer inside it ( i forgot to mention this) it has 220 input and gives a 9V output.. its inside the speaker box.. was that damaged?