iPod Ipod with issues...help?

So my buddy just bought a new Ipod and he gave me his old 4th gen(?) 40gb ipod, he told me it works but it has a strange problem with locking up every now and again and when it did he would throw it at a wall to get it to work again.... Anyway, once i got it i plugged it into my comp and it pops up the icon to be plugged into a wall and i dont have that plug.... also it was making a rattling noise like something loose i the case so i very carefully popped it open with a credit card and a little surface mount chip with a bit of hot glue on it came tumbling out i looked around the circuitboard and noticed a blob of hot glue (???) on the opposite side of the board from where the plug is for the pc connector although there is no pads where this chip would be soldered to and i cant find the spot where it should be soldered to....

This first picture is of the little chip, imprinted on it is what appears to be KVJ9 although i cant be sure because the printing is super tiny and my eyes arent that great..

This image is of the circuit board where i found the blob of corresponding hot glue, circled in red.


I'm really hoping i can somehow repair this because i'm a college student and my budget is pretty much non-existent...

Well see thats the thing, from what i can see, there is absolutely no solder pads devoid of chips on the entire board...im fairly sure this is a 4g..i havnt been able to fully charge it to see if it works yet because i dont have a wall charger for it, have plugged it into my computer but the battery is so dead it wont fully charge because it kicks to the "charge me with the wall socket" icon..

True, but it has a click wheel, the hold switch is on the upper right of the case, and i'm fairly sure it has a monochrome screen, but i cant be sure because i haven't been able to fully charge and fully boot it up.