IC-735 Main board:
I found a broken "jumper". In the service manual it is called W27
What is mysterious to me is - the "jumper" (there are lots of these on the boards) is an all- white device about the size of a 1/4 watt resisitor? I measured several of these and they are indeed "jumpers" with zero resistance in both directions (not a diode, etc).
My question is - why would Icom use these white (resistor looking) devices instead of a piece of wire?
Appreciate any comment...
Could be that when they manufactured the radio, their "board stuffing" equipment stuffed components more precisely than wires used as jumpers. Assuming, that the white jumpers were truely zero ohm resistors.
It is not at all uncommon to see "0" marked chip resistors,, that were destined to be jumpers. SMT board gear appparenetly stuffs them just fine....