Katter's Australian Party candidate Damian Byrnes has been fined $1,000 for his involvement in damaging election signage with a chainsaw in far north Queensland.

The Cairns-based coronary care doctor had pleaded not guilty to three counts of wilful damage after signs of three Labor local government candidates were cut down in April last year.

Byrnes ran against Labor's Mulgrave MP Curtis Pitt in last year's state election.

Magistrate Sandra Pearson told the court Byrnes was with another man when the signs were cut down.

She also ordered Byrnes to pay more than $1,000 restitution to Mr Pitt, who owns the signs.

No conviction was recorded, but Byrnes says he could still face action from the Queensland Medical Board.

"I've certainly learnt a lot from this case and certainly I'm sure things would be different if this all happened again," he said.

Today Byrnes has been named as KAPs health spokesman in what the party has called its "shadow ministry".

Byrnes says the case has not hurt his political career and he is grateful for his new role as KAP health spokesman.

"I don't think it affects my political ambitions in any way," he said.

"I'd say a lot of people would say this is a ridiculous case and a waste of taxpayers' money, so I don't think this has any affect on my political aspirations."