[sdiy] diagnosing polysix output noise (fwd from AH)

[Tom Wiltshire]

> On 28 Mar 2026, at 21:22, Richie Burnett <rburnett at richieburnett.co.uk> wrote:
> 
> Are Polysix synths particularly prone to battery leakage damage? I have a friend who is also currently grappling with some really quite extensive corrosion issues due to a leaked battery in a Polysix!

Hi Richie,

Yes, they're absolutely famous (infamous!) for it. Pretty much every Polysix at this point has either suffered from it, been repaired, or had evasive measures taken!

I've owned three, I think. One was past help, and served as a parts source for the other two. But they're a reliability nightmare in general. The keyboards are terrible too, and keeping all the conductive rubber contacts in a condition where they make a decent contact is difficult and a continuous effort. Plus it's rammed full of fairly cheap connectors.

Hope all is good with you. How's Spring in the UK? Underway yet?

Regards,
Tom