When I was young, I was taught to find a short in the wiring harness of a car. You unplug the fuse that tripped out, and wired a 12-Volt headlight in place of the fuse. So long as the short was present, the headlamp would show full brightness. If you wiggled the wiring harness near the short, it would flicker. Or you could unhook one wire, then the next on that fuse circuit. One of them would clear the short and lead to the fault.
Somewhere in that transmitter there's a short, most likely to ground. A meter set to ohms gets the black probe connected to the chassis ground, and the red probe to first one side, then the other side of the burned resistor. One of these will have a lower resistance reading. There are only so many wires leading away from that point. One of them will read that short on the meter once they are separated from one another.
73
Somewhere in that transmitter there's a short, most likely to ground. A meter set to ohms gets the black probe connected to the chassis ground, and the red probe to first one side, then the other side of the burned resistor. One of these will have a lower resistance reading. There are only so many wires leading away from that point. One of them will read that short on the meter once they are separated from one another.
73
