Ibanez MC940 active circuit info please

[police squad]

I have a rather splendid MC940, this is the fretless model.

The switch that switches the active circuit in. My question is, when I switch it off, the whole sound is switched off. It should just revert to passive but doesn't.

Any ideas how I could put this right?

thanks in advance

[LeftyJ]

Could the battery be dead, so you're actually killing the sound when switching to active? 

 

If not, what model 940 do you have? The 79-82 model with the brown soapbar pickups, or the 83-up model with beveled edges and PJ pickups? I could take a picture of the guts of one of my 924's to verify. They have the same electronics as the 940. 

Edited October 1, 2019 by LeftyJ

[police squad]

22 hours ago, LeftyJ said:

Could the battery be dead, so you're actually killing the sound when switching to active? 

 

If not, what model 940 do you have? The 79-82 model with the brown soapbar pickups, or the 83-up model with beveled edges and PJ pickups? I could take a picture of the guts of one of my 924's to verify. They have the same electronics as the 940. 

battery is fine as the active controls all work as they should. the passive tone also works.

mine is the 79-82 model, any pictures or help would be gladly accepted, thanks

[LeftyJ]

1 hour ago, police squad said:

battery is fine as the active controls all work as they should. the passive tone also works.

mine is the 79-82 model, any pictures or help would be gladly accepted, thanks

OK, I'll take a look at mine! 

[LeftyJ]

The lighting was poor, but here's a try. There's a LOT going on in there, so I hope this helps. Mine's a lefty, so everything is backwards but the soldering shouldn't be. If you need to see anything in more detail, drop me a PM. Most of the wiring from the active/passive switch is heading to the narrowest of the two connectors and to the output jack, but it's difficult to see. 

 

Edited October 2, 2019 by LeftyJ

[police squad]

Thanks for this, I'll have a look, hopefully tonight but I suspect it will be the weekend now

cheers LeftyJ

mart

[police squad]

Thanks mate, finally all sorted, I'd forgotten just how good this bass is