Yamaha cdx-593 help tweak

[sandro1974]

Hello everybody,
Some years ago I replaced JRC5532dd with AD OP275 in output stage of my cd and now I am interested in replacing of a JRC2068. JRC2068 is placed in front of the OP275 and after DAC YAC514F Yamaha pro-bit.
I am not an expert and do not have service manual so can not tell what is that thing do but I know it is trash. Which op. amp shall I use to replace it? Is OPA2134, OPA627, AD8620 or AD8065 good for that job, which is the best? Looked at data sheets but it is like atomic phisic to me🙂
I will post images if they can help You to understand what am I trying to do.

Thanks,
Sandro

Cheers🙂

 

[sandro1974]

Just to add some pictures to help becouse I do not have service manual.

Cheers

 

[singa]

Hi Sandro,
JRC2068 is also a dual opamp same like OP275.It is part of I/V stage.You can also use OP275 or others that you think is suitable.

 

[sandro1974]

Thanks for fast reply and sorry for bad English. I searched the internet for two days and with my a bit poor knowledge of electronic I find that I could use some quality dual op-amp but Yamaha put on final stage JRC5532 and in I/V stage (You call it that,I dunno know what is it) JRC2068 so I was confused.
I`ll buy DIL8 socket and try few of them, they are cheap op-amps. I just hope that the magic white smoke will stay in them 😀

Thanks again and all the best

Cheers
Sandro

 

[sandro1974]

Made a choice by looking at datasheets, taking care of Op-amps voltage capacity, bandwith and slewrate, think that the AD826 will be the best.

hope not to burn something

Cheers

 

[sandro1974]

One more question, does somebody have service manual or schematic for cdx593?

Cheers
Sandro