From Simonsonics Sent Fri, Apr 19th 2019, 19:15
From Simonsonics Sent Fri, Apr 19th 2019, 19:15
Hey there! Yep, if it=E2=80=99s anything like my sk50d, it=E2=80=99s a brea= thtaking amount of internal circuitry. I think this take is correct. In th= e sk50d it=E2=80=99s on the board supplying voices for the lower manual and p= edals.=20 Sent from my iPhone > On Apr 19, 2019, at 1:04 PM, SANDRA <xxxxxxxxxxxx@xxxxxxx.xxx> wrote: >=20 > Have you looked inside a D85/415 lately? There are millions of tightly pac= ked circuit boards with billions of chips in there. > I guess the chip in question would be on a voice board associated with the= auto accompaniment section. >=20 >=20 >=20 >=20 > ------ Original Message ------ >=20 >=20 >=20 > Hi All. >=20 > Looking for a YM70600 'Bass Generator' IC necessary for restoring an SK50d= . >=20 > Initially, it seemed this chip was unique to the SK50d. However, In looki= ng at a schematic for an Electone D85, it's in there too!=20 >=20 > In 1980, it seems that Yamaha upgraded the electone line with expanded fea= tures. This is also when the SK50D and D85 were released.=20 >=20 > If anyone has an electone from this period (or a service manual) and can t= ake a peek to see if there's a YM70600 chip in there, I'd be eternally grate= ful. The relevant models seems to be: >=20 > 415/D85 > D65 > D600/700/800 > E45 > E500/700 > E75 >=20 > There may be other models after 1980 of an 'analog'/PASS heritage with it.= I don't know.=20 >=20 > Thanks much, all! >=20 > -K