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#1 (permalink) |
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Tele-Meister
Join Date: Apr 2003
Location: Fayetteville, AR
Posts: 306
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Checking continuity in a pick-up
I have what may be a damaged pick-up; there's a scratch on the coils but I don't know if the insulation is off the wire where the scratch is. I have a "volt-o-meter" but I don't know if it's picking up unbroken continuity or if the uninsulated wires are touching. Is there a way to find out?
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#2 (permalink) |
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Friend of Leo's
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Very easy with a digital multimeter...
Set your mulitmeter to read resistance, and put it in the 20k range
(typical pups will read in the 5k to 15k range). Touch one probe to the ground lead, and the other to the hot lead (makes no difference which is which for this test). No reading (open) = busted coil. Somewhere in there, the teeny-tiny wire has done broke. Pup no workie. ZERO or very little resistance means you have a near dead short - the current can bypass all the winds of that teeny-tiny wire, and just jump from the hot to the ground. Pup no workie. Anything MUCH less than 5K (unless you KNOW it's a low-Z pup) probably means you have a short across at least some of the coil winding - the pup MAY still work, but won't sound as loud or full.
__________________
YMMV - I been wrong before... |
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