Discussion about the Korg PolySix synthesizer

Hi guys,

My PolySix has begun acting a bit strange lately, specifically the  
arpeggio ... it doesn't keep it's tempo anymore. It slows down, then  
speeds up, without even touching the speed dial. Someone told me that  
it could be a faulty power supply, or bad capacitors (or both). I do  
get a buzzing noise from it, and I did replace the power cord a while  
back. Don't know if that could have been a factor? Does anyone have  
any ideas or advice? Trying to fix it myself, to save the expense of  
a repair bill.

Regards, Jess