Inside a dead 12V 10A power adapter

[wwenze]

Secondary side diodes are all in parallel. The primary side is covered by the heatsinks, there is only one component connected to the heatsink. So this is likely an isolated flyback.

There was a flash on the secondary side and then everything went dead. Output measures a dead short in both directions. The computer and etc it was powering is fine. Dead diode perhaps? Can't be arsed to take out the soldering iron, if mine even has enough power to desolder this.

 

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Amazing a 10amp adaptor don't have a fuse.....

 

[commach]

It takes more than 1 diode to failed and killed the output transistors and schottky rectifier mounted on the heatsink with a bang/flash.

Likely punched through/short circuit diodes.

MIC 12v10a? If yes, the actual output could be 5a or even lower.

 

[wwenze]

Amazing a 10amp adaptor don't have a fuse.....

Usually the fuse is on the primary side... have you seen before any fuse in your power supply secondary side?

But indeed what it doesn't have, is any form of output overcurrent protection.

 

[it_geek]

Just have fun popping em capacitors