I have a slide potentiometer for a volume switch that I suspect is failed. I diagramed out the connections in the image below. The potentiometer is on the top part of the image with the outputs pins on the left, and the input pins on the right. I'm reading the following resistances between these pins from the slider pot (negative lead to output side on left of image, positive lead to input side on right of image), one measurement with the potentiometer slide all the way to the left, and the other all the way to the right which I believe is supposed to be full volume:
+Lead:-Lead Ohms Leftmost Ohms Rightmost R+:R- 11.67K 11.67K R+:Y 11.67K 9.9 R+:L- OL OL R+:OR OL OL L+:R- OL OL L+:Y OL OL L+:L- OL OL L+:OR OL OL
If I'm not mistaken do these measurements demonstrate a fault with the left channel?
I'm troubleshooting a faulty Yamaha Keyboard (CLP-550), and I've roughly traced the signal with a multimeter to the master volume switch which is a slide potentiometer. It's labeled as a
Yamaha VB022400 Slide Pot. A10KX2 RSGA2 MASTER VOLUME. I found hits on the
A10KX2 ID which brings up a bunch of audio hits with mixer boards and what not so it looks like a good generic ID for the part. The left speaker's don't play audio so I'm hoping it's just this one part that failed since the signal seems to come out the main circuit board from both sides, but nothing after this volume control. Is my pin to pin resistance measurements a definitive test, is there something else I could try or may have done wrong?
Also is there a way to parse any info from the
A10KX2 I recognize the 10K OHM from my leftmost measurements, is the
X2 basically saying two channels or something, does the
A indicate anything? Perhaps audio?
Turns out the modern equivalent part number for this component is the
VK369300 POTENTIOMETER A10K CLP/CVP. I soldered in the new part and now both left and right channels are operating properly so indeed the slide pot went bad.