Arion Chorus help

[Rodgre]

I'm trying to repair my old circa '84 Arion SCH-1 Chorus, and replacing the pots and jacks are the order of the day. I think I tried to rehouse it back in the 80's and lifted up a bunch of PC board traces, so now I'm trying to neatly repair the traces with wire-wrap wire and wire in new pots.

Last night, I got it to chorus intermittently and then it stopped sweeping. I replaced the rate and depth pots and checked the wiring/bad PC traces etc, but now it's still not sweeping. You can hear that the delay is in effect, especially if you turn the depth control, which has a minor effect on the delay time, but no rate and no sweep.

My guess is that I should replace the LFO Op-amp which is an LA6358. It seems that any old 4558 style op-amp should work. Anyone have any more info than that?

I'll let you know what happens. I haven't heard this thing since the late 80's and I'm curious as to how it compares to my dozen or so other choruses that I never use anymore.

Roger