That's a Tantalum capacitor. The Bar at the top says that's the POSITIVE end (it's the opposite of electrolytic capacitors, where - says negative).
107 is short for 100uF if I'm not screwing it up.
6K ... K is the tolerance, probably , 6 may be the rated voltage but I'm not sure, it could be that 018 is the voltage code, it could be that "6k" together is the code for a voltage rating.
ps. If you really have to replace it, you must be careful about the voltage rating, tantalum capacitors burn or explode if you put more voltage than the rating so it's very important to not use a capacitor with too small voltage rating.
You can follow the traces and if they go to that chip above, then that chip is a MC34063 switching regulator, so you can most likely determine the output voltage of that regulator by the resistors on the feedback. Datasheet explains how to determine that. It's not hard.
Diode mode of the multimeter shows open when testing the cap.
This security camera failed due to lightning. I tested every diode and transistor on both sides of the PCB but I found nothing shorted or open. So, I can assume the failed part is one of the ICs..
Voltage testing will be one of the first test to see if the board is getting any voltage feeding it. You should be able to red DC voltage across that cap. Lighting can take out may components.
No sound out put either? There must be op-amp for the Electret micro phone and out put some where on the board. So no dc on any one of the Tantalum caps? The two tantalum caps and the inductor between them is buck converter switching supply circuit, you should have voltage on those two caps.
Voltage testing will be one of the first test to see if the board is getting any voltage feeding it. You should be able to red DC voltage across that cap. Lighting can take out may components.
I would try to reflow it with hot air, the soldering looks terrible.
Lighting can load on it static electricity which it is deadly.
Does this thing run on 12V power supply? Can we see on how these board are connected to the outside world so we can see the DC jack, video, audio out, etc? I see two white headers, the two-pin one is for powering the IR) on the boards. Also the pictures of the bottom side of the boards. It must have these connections: Audio, video, B+, Ground, Control line to turn the IR lamps on/off (unless it has auto-on circuit to detect no day light condition) which may explain why it has 4-PIN connector for the 4 signals.
"4 pin header: +12V, GND, VIDEO OUT, AUDIO OUT" OK, just as I thought. Tracing out the board on how the 12V is applied to the circuit will be the next step, not going be easy task. By the way, the board has many CMOS devices that can easily be damaged by static/spikes/high voltage.
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