What voltage does your power supply deliver? Could it be like with 7805 regulators, when the bigger the difference between input voltage and output voltage, the hotter becomes the regulator.
--- In korgpolyex@yahoogroups.com, "vcagate" <vcagate@...> wrote:
>
> Hello,
>
> My Poly-800 is sounding correctly, I get 4.995V at pin 6 of connector CN6. This Poly-800 is not modded (yet), there is only a battery holder added.
>
> Q18 is quite hot, is that normal ?
>
> Thanks,
>
> mike
>