Expert 1K-FA repairing - ATU "smoketron"

   Dan OK1HRA is using Expert 1K-FA PA on OL7M remote. After two burnt AC transformers there was new problem. During RTTY contest PA stopped working on 20m and than also on 40m. There were some smoke as well..  I opened it in the job and ATU PCB was burnt off.

 I cleaned PCBs in isopropanol, change some relays and protect it with Plastik 70 super coating