hi
I need your advice on how a switched power supply from a DVD player got burned, almost literally. In other words, what was
the chain of events that could have led to destruction of power supply. By helping me with this analysis, I will be able to understand better how a SPSU works and what are its weak points.
Here is all necessary data:
- power supply is from Philips DVP5990K DVD Player.
- I've posted below the schematics and I've marked in red the components that are toasted (see also photos of carnage, chip exploded, fuse exploded, copper trace exploded). I have a hunch that the real culprit is still not discovered yet. My guess is C1 and/or C2, but I don't have an ESR/C meter.