Samtheman57 Posted October 23, 2016 Share Posted October 23, 2016 Hello: I have a good friend that recently purchased a used Casio WK-500 that she is very happy with until a few hours of use. Unfortunately, there seems to be an issue with the left channel. The on-board, left channel speaker began generating a hissing, popping static noise when the keyboard is played. She was able to test the speaker output through both headphones and a keyboard amp, and the same left channel static popping continues to occur. The keyboard was missing an AC adapter, and the keyboard is currently running on batteries only, so I am wondering if this is part of the problem? The batteries have been flipped and the static/hiss/pop still occurs. Wondering if this is a power issue/ something that can be repaired, or something that is not worth the money or time. Any thoughts appreciated. Quote Link to comment Share on other sites More sharing options...
- T - Posted October 25, 2016 Share Posted October 25, 2016 Since the static is heard in the headphones as well as the speakers, this eliminates the speaker and the speaker cut-off switch mounted inside the headphone connection. Power/battery problems would affect left and right speakers or headphones pretty much equally. This is most likely a loose or defective ribbon cable connector between two printed circuit boards. The fact that this is a recent model and was at the low edge of the middle of the line price range, deciding whether or not it is worth repairing will be a bit difficult. A rule of thumb, for US based repairs, is aound $100 just to "open up the box and take a look". Extensive diagnostics, replacement parts, and/or shipping will obviously escalate repair costs very quickly. Quote Link to comment Share on other sites More sharing options...
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