Vintage Synth Repair

On Wednesday 28 June 2006 03:39 pm, pcbye111 wrote:
> Greetings:
>
> Can anybody give me a cross reference for a "4558DV"  I am pretty sure
> it is an Op Amp.  It is used in a Yamaha ML7A Mic Mixer.
>
> It is a tough one to find.

I'm surprised at that,  because this is really a pretty common part.  Have a 
look here:

http://digchip.com/datasheets/search.php?pn=4558&pn_placement=contains

and see what they list,  some of the numbers (like the "1N4558") obviously 
don't apply,  or the ones with a "1" before the number,  which refer to a 
different part,  but that still leaves a lot of numbers.

> There are also some transistors that I am having difficulty finding a
> cross reference for if anybody has one, plese let me know.
>
> C1815	Transistor
> A1015	Transistor
> A970	Transistor
> C2240	Transistor
> 4558DV	Op Amp

The site also has a cross-reference function,  though you need to register to 
get at it.  I also probably have some of these parts,  C1815 is a 2SC1815 and 
I have 54 of them on hand.  A1015 is a 2SA1015,  and I have 11.  I don't seem 
to have any 2SA970 on hand at the moment,  though,  or 2SC2240.

You can also find datasheets for all of these on my parts pages at:

http://www.classiccmp.org/rtellason/parts-index.html

and I just looked,  _all_ of those numbers are in there.  Feel free to contact 
me offlist if you want any of the parts I have here.

-- 
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space,  a critter that can
be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James 
M Dakin