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Red/orange and blue piece in car charger

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HR19

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I have a car charger for my smartphone. It has a standard USB port and a USB-C one. It has Qualcomm Quick Charge 3.0. The USB-C port basically worked once, now it will not charge devices. Tried multiple cables and multiple devices, no luck. The standard USB port works perfectly. I opened it up and found 3 little things that almost look like fuses which are reddish orange and blue, one of which looks almost like it exploded (see photos). It also looks somewhat discolored. I won it in a giveaway online, and their warranty service said they can only replace it with copy of original receipt.

I tested all 3 for resistance and got about 9 ohms in the damaged-looking one, and no continuity on the other two. Any ideas what this is?

DSC_0001.JPG
 

Pommie

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Most Helpful Member
They are zener diodes. I would guess that the black thing at the bottom is a fuse. Can you get a better picture of the bottom?

Mike.
 

HR19

Member
Here's another one, best I can do I think. Looks to me just like a surface mount resistor, but I have little experience with these things.

EDIT: UPDATE: knowing now that they're diodes, I tested them again trying to swap leads, and there one in the middle right tested about 60 ohms, the other 2 tested about 7 ohms.
 

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Pommie

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Note the designations above the four components in the bottom left corner - C17, C18, ZD1 & F1 - F1 would tend to indicate a fuse.

Mike.
 

HR19

Member
Gotcha. I have continuity across F1, so that doesn't seem to be the problem. But I noticed that near the component with R047 on it, is a pin from a coil in the other side, and the solder from that pin is jumping to the R047 and to that tan component (capacitor?), Looks like C13 and R6. See attached photos.
 

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