I have an outstanding warrant for a probation violation out of St. Petersburg, Fl. from 1987. Living in California and trying to resolve

I was convicted in 1987 and ended up pleading no contest because the judge openly stated in court he would never accept anything other then a guilty plea from me. I was not guilty then and not guilty now. Case went on and on for months. Was never ever given a chance to tell my side of story. Tried for years to get copies of the court transcript to file a bias claim, but even those records don't exist and havent for many years. Wen't through a laundry lists of public defenders that kept withdrawing because i refused to plead guilty as well and they seemed to just want to move on to the next case. My health is not good, I am 65 years old and cannot travel to Florida even if i wanted to but would like to resolve this while I still have time so as to have a clean slate when my time comes. I have not been in any legal trouble since that time and would be grateful for any help. All lawyers in California want lots of money where I feel a few letters or phone calls could resolve this matter.