Can't get sound out of Korg R3

[el_torros]

Today I bought a second-hand Korg R3, almost new condition. It was working perfectly at the seller's house but I can't get it working at home. I'm severely incapable when it comes to this sort of thing so any help would be appreciated. All lights/keys/everything seem to be working and responding fine, I just can't get any sound output. I've got a 6.25mm to 2.5mm adapter that I've tried with both headphones in the headphone output and an amplifier/speaker system through the L/Mono output. The headphones produce no sound and the L/Mono comes across as heavy static. It's no issue with the adapter, headphones, or amp system as they work fine with my Yamaha keyboard's headphone/Aux output. Am I doing something obviously wrong? What could the issue be?
Thanks in advance

[thehighesttree]

A common issue is that it's looking for an external MIDI clock when you don't have it hooked up to anything else. If the person you bought it off of had it hooked to other MIDI gear, you'll probably need to go in the menu called "MIDI" and change the value of "Clock" to "Int" (internal), then hit the write button twice to confirm this. If the patch has any beat syncing (with the LFO, arpeggiator, motion sequence, etc.) then it won't produce any sound if it doesn't have a defined reference of time.

Still having issues? Try these:

-Make sure the volume knob isn't minimized
-Try the headphone output. Wiggle the plug and see if it makes any noises
-Make sure that the 3rd button on the top row isn't lit, otherwise you'll be playing the vocoder and without a carrier signal like your voice, it doesn't make a sound.

[javaj]

do a system reset