What is this part?

[goodpsusearch]

Is this a diode?

What do the markings mean?

[mariushm]

Re: What is this part?

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.

[budm]

Re: What is this part?

Does it test out as shorted? Typical failure mode for Tantalum cap.

[goodpsusearch]

Re: What is this part?

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..

[budm]

Re: What is this part?

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.

[goodpsusearch]

Re: What is this part?

List of ICs:

Sharp LR38627 Digital Signal Processing LSI for CCD

Sharp LR36B03 Low power consumption [81 mW (TYP.)], high-speed S/H circuit, high-gain PGA circuit,
12-bit ADC (25 MHz), mechanical iris control function, 12-bit digital output

Ai1003 A1 PROs Vertical Clock Driver for Camera System

24C16N ATMEL Two-wire Serial EEPROM

MC34063A SMPS Controller


The infrared illuminators light when it is dark, so it gets voltage.

The Sharp LR38627 gets warm.

There is no video output though.

[budm]

Re: What is this part?

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.

[Kiriakos GR]

Re: What is this part?

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.

[goodpsusearch]

Re: What is this part?

The tantalum cap of the 1st picture has 0.5V

[budm]

Re: What is this part?

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.

[goodpsusearch]

Re: What is this part?

It gets 12V DC. The output is RCA. The audio out was not used.

4 pin header: +12V, GND, VIDEO OUT, AUDIO OUT

[budm]

Re: What is this part?

"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.