diy philips cd604 - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 21st March 2005, 08:36 AM   #1
diyAudio Member
 
Join Date: Sep 2004
Location: lille
Default diy philips cd604

where find shematic about philips cd604 ?

what about this old player , can it sound fine after to change the lm833 ( are they the dacs ? )
what are the transistors to remove ( for put away ) of the mute circuit ?

  Reply With Quote
Old 21st March 2005, 11:46 AM   #2
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
Please first try Google for discovering what LM833 is.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 21st March 2005, 01:20 PM   #3
diyAudio Member
 
Join Date: Sep 2004
Location: lille
model LM833N

here

  Reply With Quote
Old 21st March 2005, 02:00 PM   #4
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
You can replace them as they're nothing special. It depends on the schematic but OPA2604 can be better in this application. According to many it not good enough compared with more modern types. OPA2132 seems a good overall choice.

There are several threads on opamps here, which one to use is dependant on the application and personal taste. Most newer types are at least better than LM833.

You can remove the Mute transistors but be aware of the plop at power up. I would fit a good low jitter clock and replace electrolytics anyhow.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 21st March 2005, 03:10 PM   #5
diyAudio Member
 
Join Date: Sep 2004
Location: lille
Click the image to open in full size.

1 -> out rca
2 ->4560d jrc
3 ->LM833n

6 ->transistor mute ?
7 ->transistor mute ?


have to change the the 4560 ? what about it ?

i don't find the mute transistor !

thanks a lot jean paul

  Reply With Quote
Old 21st March 2005, 03:25 PM   #6
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
Replace opamps 7660 and 7661. Muting transistors are 7682,7683, 7780 and 7781. Opamp 7720 is for headphones and only buffers output signal. If you don't use headphones you can leave it out if you wish.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 21st March 2005, 04:20 PM   #7
diyAudio Member
 
Join Date: Sep 2004
Location: lille
ah i'am damned !

nothing reference are writed on the motherboard !

i try to find shematic

  Reply With Quote
Old 21st March 2005, 07:53 PM   #8
diyAudio Member
 
Bernhard's Avatar
 
Join Date: Apr 2002
Location: Munich
Very cheap player, 2 regulators only, no double side pcb.
  Reply With Quote
Old 21st March 2005, 08:02 PM   #9
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
Helios999 has one and asks what can be changed. But you are right, I have a nearly new CD634 ( amongst others ) of that series that is a lot better designed. It won't help helios999

Helios999, member Remco Stoutjesdijk of the former audio-site Ultranalog sells cds with service manuals of most of the old philips cdplayers for 20 euro. A must-have if you like Philips oldies.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 21st March 2005, 09:30 PM   #10
diyAudio Member
 
Join Date: Sep 2004
Location: lille
i don't understant this philips motherboard
i tweaked my sony xe300 easily , it sound good but a little hard, and yesterday i bought this philips ( 10 ) for tweaked too.

too bad , i vill change only the op

  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Philips CD604/614 schematics deuginthesky Digital Source 5 11th August 2009 03:35 PM
philips cd604/614 schematics Peng Digital Source 6 28th February 2004 07:53 AM


New To Site? Need Help?

All times are GMT. The time now is 09:15 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2