Re: the gutless, bloated, and fried power supply hall of shame
Another thing to look at is the half-bridge coupling cap -- that dipped red one. It is much smaller than it should be for 400W rating. Usually it is a few uF at 630V. The size dictates the maximum primary current (well, the dI/dt, but with a fixed inductance and on time, fixes the maximum current.)
Another thing to look at is the half-bridge coupling cap -- that dipped red one. It is much smaller than it should be for 400W rating. Usually it is a few uF at 630V. The size dictates the maximum primary current (well, the dI/dt, but with a fixed inductance and on time, fixes the maximum current.)
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