Replacement for TA7136P

Netlist · 20th November 2004, 09:23 PM

What would be a better sounding opamp to replace the TA7136P?
I can scan the schematic if needed, datasheet can't be found.
It's used as a preamp in a Sansui TU-9900 which I recently acquired.
I'd like to apply the few mods explained here: http://www.fmtunerinfo.com/sansui.html to see if this old beauty could reproduce a bit better.

Thanks

/Hugo

Netlist · 29th November 2004, 08:56 PM

I did some scanning today.
Perhaps this can ring more bells.

/Hugo

Netlist · 29th November 2004, 08:57 PM

Internal schematic:

paba · 30th November 2004, 06:59 AM

Hello,

i recently replaced the TA7136P in the phono section of a kenwood receiver. The difference is remarkable! wider sound stage and more detail.

I replaced two single op amps with 1 dual opamp. I had a OPA2604 on hand so I used that.

You could use:
NE 5532
OPA604 or OPA2604

Keep in mind that the TA7136P is in single in line package and the new parts come in DIP or even surface mount. So you will need to build a little pin-to-pin mapping or conversion.

TA7136P pins:
1. frequency comp
2. non-inverting input (+ input)
3. inverting input (- input)
4. V-
5. voltage comp
6. outout
7. V+

So for modern op amps you probably don't need to map pins 1 and 5.

Good luck
Paba

Netlist · 30th November 2004, 10:36 AM

Thanks a lot paba, this was exactly the answer I needed.

A warm welcome to the forum while I'm at it.

/Hugo

paba · 30th November 2004, 05:27 PM

I've received so much help and advice from various newsgroups and forums and I've learned so much just by reading along other peoples threads... whenever I get the chance to give back I do.

Doesn't happen too often but I contribute what I can.
Let us know how your final conversion sounds.

cheers
paba

Netlist · 30th November 2004, 05:48 PM

Thanks paba, nice attitude.
I'll report but be prepared to wait a bit

/Hugo

opik · 23rd December 2005, 12:59 AM

Hi,
Thank to everyone have interest to TA7136, i've been months search the datasheet, special thanks Paba! now i can learn to tweak my Boss DS1

opik · 26th December 2005, 10:35 PM

Dear Netlist..
I wonder do you have more info on TA7136 if you have more scanned file on TA please upload, i need more spec. ... or Paba n others will help??
Thanks in advance!
Regards,
opik

paba · 27th December 2005, 10:52 PM

Hi Optik,

what info do you need exactly or what are you trying to do, maybe I can help in some way. I have some info on the TA7136AP from Toshiba.

What specs do you need?

cheers
paba

20th November 2004, 09:23 PM	#1
Netlist diyAudio Moderator Join Date: Jan 2003	Replacement for TA7136P What would be a better sounding opamp to replace the TA7136P? I can scan the schematic if needed, datasheet can't be found. It's used as a preamp in a Sansui TU-9900 which I recently acquired. I'd like to apply the few mods explained here: http://www.fmtunerinfo.com/sansui.html to see if this old beauty could reproduce a bit better. Thanks /Hugo

23rd December 2005, 12:59 AM	#8
opik diyAudio Member Join Date: Oct 2005	cool Hi, Thank to everyone have interest to TA7136, i've been months search the datasheet, special thanks Paba! now i can learn to tweak my Boss DS1

26th December 2005, 10:35 PM	#9
opik diyAudio Member Join Date: Oct 2005	I need more data Dear Netlist.. I wonder do you have more info on TA7136 if you have more scanned file on TA please upload, i need more spec. ... or Paba n others will help?? Thanks in advance! Regards, opik

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30th November 2004, 06:59 AM	#4
paba diyAudio Member Join Date: Sep 2004 Location: Montreal	Hello, i recently replaced the TA7136P in the phono section of a kenwood receiver. The difference is remarkable! wider sound stage and more detail. I replaced two single op amps with 1 dual opamp. I had a OPA2604 on hand so I used that. You could use: NE 5532 OPA604 or OPA2604 Keep in mind that the TA7136P is in single in line package and the new parts come in DIP or even surface mount. So you will need to build a little pin-to-pin mapping or conversion. TA7136P pins: 1. frequency comp 2. non-inverting input (+ input) 3. inverting input (- input) 4. V- 5. voltage comp 6. outout 7. V+ So for modern op amps you probably don't need to map pins 1 and 5. Good luck Paba

30th November 2004, 10:36 AM	#5
Netlist diyAudio Moderator Join Date: Jan 2003	Thanks a lot paba, this was exactly the answer I needed. A warm welcome to the forum while I'm at it. /Hugo

30th November 2004, 05:27 PM	#6
paba diyAudio Member Join Date: Sep 2004 Location: Montreal	I've received so much help and advice from various newsgroups and forums and I've learned so much just by reading along other peoples threads... whenever I get the chance to give back I do. Doesn't happen too often but I contribute what I can. Let us know how your final conversion sounds. cheers paba

30th November 2004, 05:48 PM	#7
Netlist diyAudio Moderator Join Date: Jan 2003	Thanks paba, nice attitude. I'll report but be prepared to wait a bit /Hugo

27th December 2005, 10:52 PM	#10
paba diyAudio Member Join Date: Sep 2004 Location: Montreal	Hi Optik, what info do you need exactly or what are you trying to do, maybe I can help in some way. I have some info on the TA7136AP from Toshiba. What specs do you need? cheers paba

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