[dan_sui]

Hi Darryl,

Thanks so much for the quick reply.

I am certain that the headphone jack is a problem, because it has happened to some playback of programmed VIs.

But the problem also seems to be partly related to the input jack too, because sometimes when the problem is occurring, wiggling the guitar jack also helps.

It's the kind of thing that reminds me of a cold solder joint.

Would love to hop on another one if it is the problem, but I'm based in South Africa. So not so easy.