3.5mm to 6.35mm adapter stuck in headphone socket!

[voip]

Not personally taken the SV1 apart, but have done so with quite few other keyboards.

If you're comfortable with taking stuff apart, then go for it. Basically place it upside down on a suitably padded surface so as not to damage anything, and then remove a lot of screws from the bottom. These need to be kept track of so the same screw goes back in the original hole as the screw lengths and thread sizes may not all be the same for design reasons, so best not mixed up.

Here's a video that might help a little, although not a lot, as it's more of a time lapse record of something being done to an SV1 without any detail or explanation and not really instructional.

https://www.youtube.com/watch?v=zNyWl2DQ-_8

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