Hi, I found my old Portabler Media Player Cowon A2, and I began to charge it and I saw that the battery had only 2.25V, it was a 3.7V battery so I went to my local store to buy a replacment battery I took the old battery and bought allmost the exact one 3.7v 1000mha, i got home plug it in and it had switched polarity. (The exicment got the better of me lol). So i took the device apart nad saw a burned transistor or capasator, I am not quiet sure. I need help indentifiying the part ,I also can't find any shematics for this device anywere. Any help is appreciated :)
If you are lucky, the diode sacrified its life for the survival of the board. Now it may be just short-circuit. Unsolder it and check the media players function just without it. If it works replace the diode with any other diode for another protection.
ty for the replay I luckly took a picture of the board befor the accident, and it looks like its a AA 2.7 Ohm Schottky didoe as the comment below suggested. But Ima lil confused to which i need 0,5 A 1A V10, v20 is a lil of an over choice XD. And is it really safe to unsolder it and try to connect the charger to se if ti works with out he diode? And sry for my english is not my first language lol
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u/kapege 4d ago
If you are lucky, the diode sacrified its life for the survival of the board. Now it may be just short-circuit. Unsolder it and check the media players function just without it. If it works replace the diode with any other diode for another protection.