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I'm learning about electronic components. I believe this is the part which has broken and made this heating pad unsafe to use. Well, unusable, not just unsafe lol.
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this post was submitted on 07 Dec 2023
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No, there's no fuse here. From top to bottom, there is an electrolytic capacitor, zener diode, and a 4MHz resonator.
Ding ding ding
For op, ZD means zener diode.
Thank you for your answer. I will continue looking for the fault