Quote:
Originally Posted by TonyDuell
Was the resistance measurement for the volume control made with your lead plugged into the pickup sockets?
The reason I ask is that (using Trader Sheet references), when you plug in the cable, S16 opens and S17 closes, effectively putting R11 in parallel with the volume control. That would massively reduce the measured resistance (lower than you get).
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Yes, you are right Tony. I have removed the switches and wired in a cable for the pick-up and so the R11 (the pick-up shunt 100K ohms) is permanently in parallel with R8 (volume pot) and R9 (only 22ohms). This combination of Rs means the measured resistance should in theory be 87K ohms.
So, in fact the 240k Ohms that I measured is higher than would be expected if everything was performing to spec. This means that the actual resistance of the volume pot must be much higher than its spec of 700K ohms.... suggesting a break somewhere perhaps....