Fixing a 24V 10A 240W switching power supply module donated by a viewer. He tried to fix it, but couldn't find the fault. Everyone keeps learning during their whole life. No-one knows everything. Showing how to diagnose this 2-switch forward SMPS, so he (and other beginners) will be wiser next time. Testing transistors can be tricky. Neither I am perfect, I took the longer path this time :). The tricky situation when something with seemingly no bad components isn't working!
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