Recently, I received an external USB 3.5" HDD case with a JHS-Q05/12S334 power supply manufactured my Shenzhen Jinhuasheng Electronic Co. Ltd.
I decided to try to find the company, but a search for the model number revealed a discussion that one of them have blown up.
Inside my unit, the component's leads were cut too short, and moving a resistor a little bit made it come out easily. I guess why one of these supplies (as well as others with bad solder joints or components with leads cut too short) blew up because of a bad solder joint or a component lead becoming loose from thermal cycling.
I decided to try to find the company, but a search for the model number revealed a discussion that one of them have blown up.

Inside my unit, the component's leads were cut too short, and moving a resistor a little bit made it come out easily. I guess why one of these supplies (as well as others with bad solder joints or components with leads cut too short) blew up because of a bad solder joint or a component lead becoming loose from thermal cycling.

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