Great part of the western slope of NSW!! My Mother was born in Canowindra, and I have spent a lot of time there over the years, still have relatives there.
HI,
Long time lurker here.
It is likely that there is more damage than is visually evident. The smaller transistors mounted on the heatsink have definitely blown, and this was most likely caused by shorted output transistors (the large transistors mounted on the heatsink marked with a question...