First off, if you want to pay someone to repair it for you, take it to Nino at APR. that said I'm reasonably new to the addiction of pinball ownership and have had 3 or 4 with problems. i've always asked questions here first and repaired all of them myself, apart from 1 which needed board repair beyond my capability and sent it to Beaky. Just ask questions and you will get help
Bren