We were testing a peltier module and turning on and off the power supply when magic smoke formed and it stopped working. The smoke happened immediately after the supply was turned on again. We were pulling around 2 to 3 amps and there was about 5 minutes between turning it on and off. Is there an easy way to fix this and what caused this problem? Model DR. Meter HY3005F-3

Pictures https://imgur.com/gallery/Ye54skT

Thank you

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    \$\begingroup\$ You're showing us a picture of a bench supply that has cooked itself. If it were a proper design, the current limit should prevent it from doing that, so apparently it is a pretty looking piece of garbage. Probably not worth repairing as the picture can't show what all is wrong - salvaging that toroid almost looks tempting, but for all we know it is wound on tractor axle nut. Brand name on it is certainly worth a laugh. \$\endgroup\$ – Chris Stratton Mar 5 at 1:52
  • \$\begingroup\$ Your application doesn't seem like one which needs a heavy linear supply, you can probably find a compact switcher... \$\endgroup\$ – Chris Stratton Mar 5 at 1:56
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    \$\begingroup\$ Is there an easy way to fix this and what caused this problem? Maybe there is (probably there is), maybe not. But this is not the kind of knowledge that can be explained or teached to a newbie in a single reply; photos are not enough to someone say where was the fault. Most things in electronics demands years of practice and studying. If you had a faulty supply, don't expect that you'll come here and get a ready-made recipe for fixing it. In other words, something that is easy for a experienced person, would not necessarily be easy for an untrained person. \$\endgroup\$ – mguima Mar 5 at 2:40

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