IR LED repair - cctv camera not working at night

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Quick repair of Hikvision cctv camera - IR LED illumination had stopped working.
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Amazing work you have done to fix that cctv camera you are a expert at these things

halmain
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Very good!. Requests:
1) how do you know which leds are in series? Do you have to test the soldering of the LEDs one by one and make a drawing?
2) how do you understand the polarities of soldered LEDs?
3) what type of new LEDs did you purchase? That is, they should be qualitatively identical to the faulty ones, but how do you understand which ones to buy?

enricolazzerini
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QUESTION! where can I get the replacements at?

christiancowboy
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HY sir
hoping you are fine
Sir what is the name of this tool you are using for pulling the LED

shoaib.lcwuyousaf
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The advantage of infrared at 850 nm is that it is visible as a faint red glow to the human eye, which is not very practical for video surveillance, because a malicious person will quickly guess the presence of a camera.

nostalgeek
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Do you have a link for the leds? Thx 👍

groenskiftet