[lcaillo]

If you have had coolant on the board you have a situation that is well beyond the degree of help that can be afforded in a forum like this. Every connection and trace in the areas that have had coolant on the board is suspect and repair can be a very tedious and difficult process. With a double sided board like this one, the feed through holes are often a source of problems with coolant leaks. Most experienced techs beg off on these repairs and will not even attempt them. I fix about 90% of them and the rest are unrepairable.

The first part of these repairs is to map the area with coolant very carefully. Next you have to clean the coolant thoroughly. The smallest amount of residue wil eventually cause corossion. It is best to wash the board in isopropanol then run it through a dishwasher with a dry cycle. Then you have to start checking every component in the coolant area previously mapped and every connection and trace. Any feed through that is damaged needs to have a wire placed through the hole and solderred on both sides.

This is tedious and deliberate work that requires patience and diligence.