Boss CE-1 No Chorus

[ziggy007]

G'day Guys,

Has anyone had experience with the CE-1 not being able to engage the 'chorus' function? (The Vibrato is working 100%)
I've traced it down (I think) to no signal coming out of IC4 pin 1 and nothing on 7 when in chorus mode. (all measurements seem ok in vibrato)
The ic CA1458G/uPC1458 is nil stock in Australia so I thought id ask around while i was sourcing one from OS.

thanks as always

gavin

[doctor]

G'day Guys,

Has anyone had experience with the CE-1 not being able to engage the 'chorus' function? (The Vibrato is working 100%)
I've traced it down (I think) to no signal coming out of IC4 pin 1 and nothing on 7 when in chorus mode. (all measurements seem ok in vibrato)
The ic CA1458G/uPC1458 is nil stock in Australia so I thought id ask around while i was sourcing one from OS.

thanks as always

gavin

You may use almost any relatively modern dual opamp
for IC4 replacement: 4580, 4560, 4565, 4558, etc.

But I think that potentiometer Chorus Intensity (10KB) is a problem.

[ziggy007]

thanks Doctor,
Iv e sussed the pot and its ok right on 10k and smooth.
cheers for the alternate ICs

edit. scrounged a 4560 out of an old fender pcb and its a goer!!!

thks again mate.