Korg Poly800/EX800 Users

Any adapter which has the same output (volts, amperes), connector and  
polarity could work - inside the instrument there are regulators so I  
think they would deliver proper voltages to internal circuits.

Maybe yours will work too, when you will set proper voltage +5 Volt  
with VR1 in regulator circuit. -5 Volt rail seems to be allowing more  
tolerance - according to the point 1 it can be between -4.7 ~ -5.7  
Volt. Just try it. If voltages will be out of spec, you should try  
different adapter, more near to the original one.

Daniel Forro


On May 16, 2017, at 8:18 PM, purpurinisukutis@... [korgpolyex]  
wrote:

> Few steps in adjustment procedure consists of measuring voltage  
> while using original 9V, 300mA AC adapter, however when i bought the  
> synth i got not original power supply - its 8.5V, 350 mA. Do you  
> think that i could use that one for this procedure, or do i need to  
> buy specificly  9V, 300mA AC adapter? If original adapter is needed,  
> maybe you know some alternatives for it?