Vintage Synth Repair

Hi Valerio,

You're right, it seems you can use a 8 pins instead of the 14p.
Take care to insert the 8p at the right place and maybe you can have a look at
the p.c. board to see if other pins are or not connected to somewhere...


Selon Valerio Scrivano <vscrivan@...>:

> Hi,
> thanks for your reply.
> If you read the Datasheet of  lm709 at
> http://www.national.com/ds/LM/LM709.pdf
> you will see that the lm 709 cn/14 and lm 709 cn/8 have same specifications
> and data and that, if you mount the 8 pin version starting from the 3rd line
> of the of the 14 pin socket (pin 1/8 --> pin 3/14, 2/8 -->4/14, ....pin
> 8/8 --> pin 12/14) there is a correspondence pin to pin.
> Can you confirm it ?
> thanks
>
> ----- Original Message -----
> From: "jm leman" <leman@...>
> To: <vintagesynthrepair@yahoogroups.com>; "jm leman" <leman@...>
> Cc: <vintagesynthrepair@yahoogroups.com>; "vscrivan" <vscrivan@...>
> Sent: Thursday, April 26, 2007 4:46 PM
> Subject: Re: [vintagesynthrepair] Solina string ensemble
>
>
> > Have a look at this link :
> >
> > http://www.selectronic.fr/upload/produit/pagecatalogue/3-33.pdf
> >
> > in the left column, the fifth item in "standard op".
> > these op amps are still findable in 14pins package.
> >
> >
> >
> > Selon jm leman <leman@...>:
> >
> >> As long as I know, 8pins and 14 pins op amp aren't pin to pin compliant!
> >> Have a look at any electronic comp. sellor's catalog, you'll find 14 pins
> >> op
> >> amp
> >> that can replace the 709 (even being more performant for noise and speed.
> >> Where are you living? I'm in France and I think I amy still have a little
> >> stock
> >> of old 14p op amp I'll not use anylonger...
> >>
> >> jean-marie
> >>
> >> Selon vscrivan <vscrivan@...>:
> >>
> >> > Dear friends, I own a Solina String Ensemble and I have to replace 2
> >> > op amp LM709C. Since it's difficult to find the original part that has
> >> > 14 pin, do you know if it's possible substitute it with the 8 pin
> >> > version on LM709C op amp ? Are they equivalent ?
> >> >
> >> > thanks.
> >> >
> >> >
> >>
> >>
> >>
> >
> >
> >
>
>