I was given this Weller soldering station. The display is not working. It
does flash 888 on it when first turned on. The tip does heat up, but I have
not determined if I can vary the heat or not. Also have an extra soldering
pencle that plugs in it. Changed them to see if the display would light,
but it didnot. Any hints on it ?

Also how do I open it up ? Screws under the 4 rubber feet ?