[sdiy] Casio CZ-3000 with mains to chassis fault

cheater cheater cheater00social at gmail.com
Tue Aug 31 12:07:42 CEST 2021


No

On Tue, Aug 31, 2021 at 11:21 AM Richie Burnett
<rburnett at richieburnett.co.uk> wrote:
>
> Did you hear a "snap" or "click" sound when you felt the shock?
>
> -Richie,
>
> Sent from my Xperia SP on O2
>
> ---- cheater cheater via Synth-diy wrote ----
>
> >Hmm, I mean, I can see that, but this hurt way more than the mains
> >shock I got a couple years back. Makes sense given that static is
> >higher voltage... just surprising... I guess the thing is a piece of
> >metal surrounded by plastic paneling, seems like a great way to build
> >a Leyden jar...
> >
> >On Tue, Aug 31, 2021 at 12:54 AM Tom Wiltshire <tom at electricdruid.net> wrote:
> >>
> >> Static shocks get worse with low humidity, so weather is more of an issue than wiring!
> >>
> >> It’s August. I’m guessing you’re in the northern hemisphere so you’re somewhere that’s having summer now and it’s pretty hot and dry.
> >>
> >> > On 30 Aug 2021, at 23:31, cheater cheater via Synth-diy <synth-diy at synth-diy.org> wrote:
> >> >
> >> > Yeah, I just unwrapped it. Could well be. But the shock was pretty
> >> > damn huge. Can this effect be compounded by mains capacitors being
> >> > connected to chassis through ground? Should I bridge them with 1MR
> >> > shunts?
> >> >
> >> > On Mon, Aug 30, 2021 at 6:43 PM Richie Burnett
> >> > <rburnett at richieburnett.co.uk> wrote:
> >> >>
> >> >> Sounds more like a static electricity shock to me, if it wasn't connected to anything at the time and you had just been removing plastic packaging etc.
> >> >>
> >> >> -Richie,
> >> >>
> >> >> Sent from my Xperia SP on O2
> >> >>
> >> >> ---- cheater cheater via Synth-diy wrote ----
> >> >>
> >> >>> Hi all,
> >> >>> I have just unwrapped a new-to-me Casio CZ-3000, which seems to be in
> >> >>> excellent condition cosmetically. As I was unwrapping it, the metal
> >> >>> chassis gave me a pretty strong shock. I assume that was the mains
> >> >>> capacitor unloading into the chassis and ground. The keyboard wasn't
> >> >>> plugged in and hasn't been plugged in for weeks. I was wondering if
> >> >>> anyone knew of any common faults that this keyboard might have that
> >> >>> would cause this.
> >> >>>
> >> >>> Best regards
> >> >>> _______________________________________________
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> >
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