Korg Poly800/EX800 Users

Yup it still works fine on batteries. I can live with that.
What needs to happen to make it work again on a regular PSU?
Does the Circuitboard need to be replaced? Or wil resoldering components do the trick?

--- In korgpolyex@yahoogroups.com, Gordon JC Pearce <gordon@...> wrote:
>
> On 29/07/12 12:27, kjelle.vergauwe wrote:
> > Ok I retried measuring C3 and C4. For some reason I was probably doing something wrong.
> > C3 & C4 measure  around 580 and I get a 'beep' now.
> 
> No, don't measure the resistance, measure the voltage across them.  You 
> reckon you saw 0V, so the circuit around Q1 isn't working.
> 
> This is most likely because shorting the supply killed Q1 - if you 
> notice, it's between the negative terminal of the power lead and ground. 
>   If you shorted the positive terminal of the PSU to ground, you'd dump 
> all the current the PSU can provide into Q1 backwards, and it wouldn't 
> enjoy that...
> 
> You'll probably find it'll work just fine on batteries.
> 
> -- 
> Gordonjcp MM0YEQ
>