iFixit

Remove the two Phillips #00 screws from the top of the iPod.

The highlighted connector attaches the click wheel and headphone jack to the logic board. This cable must be disconnected from the logic board before continuing.

Use a spudger to disconnect the headphone jack cable from the logic board. You need to gently pry the connector toward (or up, if you like, the connector is like LEGO® building blocks) the front of the iPod until it comes loose from the logic board.

Special hint for the reassembly: Push the connector inside until it is over the corresponding connector of the logic board. Then insert a thin tool over the connector and push it down onto the logic boards connector.

Use a spudger to push the logic board through the iPod out of the casing. The click wheel and headphone jack should remain in the iPod.

Be careful not to catch the headphone jack and click wheel on the logic board as you remove the logic board and display.

When removing the logic board, place the tip of the spudger into the hole where you removed the screw and gently push it out. The crevice will keep it in place and decrease the chance of you damaging your board.

Completely remove the display and logic board from the metal casing.

When reassembling, ensure that the battery is well seated. If the fit is too tight, the edge of the display will score the inside of the screen window.

Use a spudger to gently pry the battery up from the back of the display. Be careful not to put too much pressure on the display with your spudger.

Use a metal spudger to carefully pry the metal bracket off the back of the display. Make sure you only pry off the bracket and not the clear shielding on the rear of the display. By working from the inside of the display, you won't be able to accidentially pry up the clear plastic shielding.