I have a small board camera to fly first person view on a quadcopter. The camera outputs a PAL/NTSC analog video and is powered off of 12-17 volts (I'm assuming this is regulated)
During a crash, what appears to be a surface mount inductor came off of the board, and the camera doesn't work anymore. The inductor is close to a surface mount SO-23 component marked A7 (a high speed two diode package) and a bunch of discrete resistors/capacitors.
My research turns up surface mount inductors have very, very small values (in the tens of nH). It would be too small for a switching regulator, and there isn't any other reason I can think of for there to be an inductor on an analog camera.
Since the loss of the inductor, the camera does not output anything. Since this inductor is likely of a small value, can I replace it with a short loop of wire? Or is it a serious risk to assume that the exact value of the inductor is unimportant?
Update: jumping the pins did as expected, the camera turns on but is very prone to interference. Since it's right next to a 5.8g receiver, four brushless motors modulated at 24khz and a bunch of other stuff, it picks up a lot. So that means that it was a ferrite bead. Can I replace this with a loop of wire wrapped around a ferrite ring, or is that long bit of wire still going to pick up garbage?
Update 2: I dismantled a CD-ROM drive and took the ferrite bead. The camera still turns on, but if anything the interference is worse than just with a jumper. I'll try a proper inductor next and see what that does.