posted on Aug, 23 2011 @ 12:29 AM
With the power disconnected and your meter on ohms, check all of the resistors (black components, the white and brown ones are capacitors) on the chip
side of the board for any that are one ohm or less. You are looking for jumpers that control the channel setting.
The safe way to test is to remove a jumper, power the camera up and check for a channel change. Sorry, it's the best I can do for now. It is a very
non-typical board and there is not much to go on.
Don't be particularly concerned about salvaging the jumper. You can bridge the pads again with a strand out of a piece of small gauge wire.
There may be the odd jumper for controlling other things such as NTSC/PAL, just FYI.
I'm also concerned that the three other connection pads may be for programming the video processor chip at the factory. I'm hoping not and the
resistors in series at each connection suggests otherwise (typically they would be a pullup or pulldown resistor for a comm port but they are not
here) but I can't imagine what else the connections would be for.
One other angle to approach this from is to look up the part numbers on the chip and see if you can get a data sheet with a pin out that hopefully
shows the channel control pins. I tried this but I'm not sure if that is a two or seven at the second digit. If you can post all of the number sets
on the chip I will do another search as well.
I'm also wondering if the three empty connection pads might be for a channel select switch. Again the resistors in series would suggest otherwise but
if you get desperate you can try connecting them together in different combinations. Bridging them with a 1K ohm resistor probably won't harm
Let me know how it goes.