How can we remove uninformed and potentially corrupt HOA board?

I would like to see the whole HOA board removed as I believe there has been some corruption going on with replacing items that do not need to be replaced and not doing what needs to be done and not allowing the condo owners to have a say in the color of a new roof, replacing skylights that they have to pay for that was put in by an inexperience roofer who damaged all 7 of mine while installing.

At the present time we have 3 appointed people on the board and they are all on the side of the HOA without knowing anything about this place and what the HOA has done.

• How long can someone stay in office when appointed by the HOA because someone resigned?
• When do we get a chance to vote for someone new for the position vacated that someone was appointed to by the HOA?
• Do we have to wait until the term is up for the original board member that resigned before we can vote someone we want to fill that position or do we have to wait and accept the appointed person for the rest of someone's term which may be almost 3 years?

Any help would be appreciated. We only have 90 units and I want to get the board off now before they do something else and charge everyone another $1,000 assessment but everyone here thinks it is not easy to do that but now we will have 3 appointed members.