dheffer · 8475
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Both terminals 5 and 15 are wired to the headphone jack. At the tip and the ring connections on the headphone jack, there's a 2.2K resistor to the sleeve (ground) connection on the headphone jack. If the 2.2K resistor is there and properly soldered in, you'll get 2.2K to ground from 5 and 15. If you have the resistors improperly connected (say you have a 2.2K resistor between tip and ring), then you could easily get 4.3K at one of the terminals (and a ton of signal bleed between channels). -PB
What DC voltage do you see between 24 and 25? How about 30 and 31?