Discussion about the Korg PolySix synthesizer

Hello all, I just got a polysix that had the battery issue; fixed up
all the traces and it was working fine.

Now, I have to wait for the polysix to warm up in the sense that after
5 minutes, the voices no longer have a delayed modulation. This just
started to happen, after I fixed the battery traces, the polysix
worked right away from power up. 

Is it possible there is a mechanical issue at play or some power
supply problem?