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Mmmmmm, Green and Black's........
Attachment 37093
If you are using the continuity tester setting on the multimeter, then you probably won't get a rewarding beep as that function is normally on the 200 ohms range setting (or thereabouts) and if the resistance is over 200 ohms, then you won't get a beep as the reading will be over-range.
You'll need to use the 20k resistance setting and measure the resistance of the coil. For example, the Tonerider Alnico II and IV neck humbuckers have a nominal DC resistance of 7.5kohms
So if you turn the volume and tone controls up to 10, and have one of those pickups, you should measure (normally within ±10%)
Green and Black/white wires = 3.75k ohms
Red and black/white wires = 3.75k ohms
Green and red wires = 7.5k ohms
For any other pickup, use the DC resistance value for the green to red measurement, and half that value for the other two.
Ok, I’ll check it out later.
I’ve actually desoldered everything and just testing the ends of the pickup wires.
But if you've got a green to red resistance reading, the pickup's working.
The volume pot is the other item to check when de-soldered. Using McCreed's pot diagram for reference, you should get around a 500k ohms reading between tabs 1 and 3. This will remain constant regardless of the position of the control knob. If you get nothing/open circuit, then you've got a broken track.
Assuming that's OK, then check the resistance reading between tabs 2 and 3. With the volume knob fully clockwise (at 10), you should get a dead short, as if the tabs were directly connected together. Turning the volume knob anticlockwise towards 0, the resistance reading should increase until at 0 you have the full 500k ohms (or whatever value you measured between pins 1 and 3). It should be an audio/log taper pot, so you won't get 50% resistance at halfway.
If that all checks out, then the problem can only have been down to a poor solder joint or a broken wire.
I should start all my posts with a thanks to everyone.
Electronics (including the wires) all test ok. Must be my second rate soldering skills.
Tap, tap. Success at last.
Hurrah! Hurrah!
I wasn’t happy with the fit of the bridge to the arched top so I built this tool from some off cuts. It’s a lot of sanding but it works really well.
Slowly, slowly getting there. Same issues as my first build as I set the neck before I realised about the significant height difference between floating and screw in bridges. Missing some notes in the open position as I may of lowered the nut a little too much and may require a shim. But it works. Leaving it with some strings on overnight and see how things are tomorrow.