Source for Yamaha IG Chips

[mistercooper]

Hey all,

I remember reading somewhere that some of the older electone organs can be a source for proprietary Yamaha IG series chips. Does anyone know which organs are valid donors and which chips are inside? I'm specifically talking about stuff that is useful to the CS series... I'm in dire need of some filter envelope chips. It would be a huge shame if the only option left is to cannibalize CS stuff.

I might be able to trade some diy assembly work for the right ic's...

Thanks a bunch,
Cooper

[peterm]

I have no idea about any of the common electric organs have any useful components but at least I found the Yamaha IC Guice Book the other day which shows what machines use which components in a chart.
Although it only shows the CS-series along with some YC, CP, SK10 and SS-30 it might be of some use.
Doesn't seems to be any iG-chips in any of them except the CS series though, only a few YM-chips.

http://manuals.fdiskc.com/flat/Yamaha%20IC%20Guide%20Book.pdf

[mistercooper]

Thank you for the info peterm, I had not seen this before

Perhaps I will have to use the limited info on their internal structure to make some surface mount clones. There is quite a space limitation, though.

In the mean time I will keep an eye out for VCA envelope chips...

cheers,
Cooper

[widdly]

I found an old yamaha organ in hard rubbish. It has a bunch of IG chips. What numbers do you need?

[mistercooper]

Hi Widdly,

Cool! Is this the organ that was posted about on SDIY today?

I think I'm looking for some IG00159 envelopes... I'm curious what model you've got and which chips are inside. I've seen IG's in an electone before but they weren't like the ones I recognize in the CS synths. You can PM me if you like.

cheers,
Cooper

[widdly]

I'm not sure what model it was. It has...

IG02611
IG02601
IG03290
IG02602

It has a bunch of YM chips too.

I guess these are probably later than CS synths..

[mistercooper]

Interesting, good to know + thanks for lookin'

Cooper