glas , which is your player type? Is it the pink gen 2 player as in the picture you linked? Or is it the older nano clone like this?
http://www.mercadolibre.com.ar/jm/im...3_7845.jpg&v=P
For the pink gen 2 type, there are hidden screws below the white cover (where the On/Off switch is). You'll need to lift/pry it up to expose the screws. You might need to check the bottom too for any screws. Once removed, you can slide the player out from the outer pink casing. You'll probably need to depress the buttons whilst doing so to avoid damaging the board inside.
For the old nano clone, there are 4 screws which hold the front and back casing together. You can refer to the first few steps of the Dead Player Recovery guide here
http://www.mympxplayer.org/dead-play...ide-vt567.html
on opening it.
Was the player's original firmware v9.0.48? If so, likely the chipset would be the ATJ209* series.