Can anyone provide me with some advice as to what the problem might be with my driver side window power switch?

Some time ago I experienced the switch will work in lowering the window but wont wind back up, switch the lead to the passenger window switch and yes it can lower and raise the window.

Ok, faulty driver side switch, purchased an alleged new one via ebay, yes, it worked for about 4 weeks then experienced the same problem.

I found another one from the wreckers and does the same thing.

Is there anything else that could be causing the problem apart from the switch?

Cheers, Peter

update,

Went to the wreckers , replaced switch with another and have the same occurring problem.

Anyone else had this problem? If so, how did you remedy this problem?

Thanks