Marantz CD63 & CD67 mods list - Page 1390 - 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 10th January 2010, 08:46 PM   #13891
6h5c is offline 6h5c  Netherlands
One Seriously Addicted to Audio and Electronics
diyAudio Member
 
6h5c's Avatar
 
Join Date: Apr 2004
Location: Heerhugowaard
Strange. For all you know, it may have been there all the time but you just didn't notice it. With the muting gone, you can hear everything the player does when it's not playing. The hum changes when the player focuses, so it sounds like the problem is load related. A scope would be real handy to see if there's any excessive ripple on the supply lines. Also the internal ground could still be a cause. When the load currents do not run where they are supposed to, this can generate similar problems. You could do a quick check of the various supply voltages with a DMM, and see if they are not low or sagging. Also, check before the regulators, to see if the voltage doesn't fall below the minimum requirement = output voltage +2.0 to 2.5V. You may even try to measure residual ripple by using the AC function and see if you can detect any abnormal levels on the supplies.

Regards,

Ray
__________________
Gonna buy my little girl a pink soldering-iron
The new DOS-CFP board is out!
  Reply With Quote
Old 10th January 2010, 09:57 PM   #13892
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Ok that's an easy task for next midday!
Thanks Ray,
Matthieu
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  Reply With Quote
Old 11th January 2010, 02:11 PM   #13893
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
All voltages OK, grounds of outputs to DAC's one, the same. Anyway, that's the very same hum as my phono stage and alsmot at the same (far away of music level) level! More than odd...
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  Reply With Quote
Old 11th January 2010, 06:01 PM   #13894
6h5c is offline 6h5c  Netherlands
One Seriously Addicted to Audio and Electronics
diyAudio Member
 
6h5c's Avatar
 
Join Date: Apr 2004
Location: Heerhugowaard
Are you sure it's coming from the player then?

Ray
__________________
Gonna buy my little girl a pink soldering-iron
The new DOS-CFP board is out!
  Reply With Quote
Old 11th January 2010, 07:03 PM   #13895
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Rien ne m'est sr que la chose incertaine.
Will lend it to a friend for test and get a full review

thanks guys for the help provided, still have to regulate the drivers before let the bird fly away.
Matthieu
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  Reply With Quote
Old 11th January 2010, 09:07 PM   #13896
RCruz is offline RCruz  Switzerland
diyAudio Member
 
RCruz's Avatar
 
Join Date: Sep 2006
Location: Wallis
Blog Entries: 1
Did you not report (years ago) that you had problems with the mains where you live ?
  Reply With Quote
Old 12th January 2010, 12:12 PM   #13897
UV101 is offline UV101  England
diyAudio Member
 
UV101's Avatar
 
Join Date: Dec 2008
Location: Oxford
Quote:
Originally Posted by Malefoda View Post
All voltages OK, grounds of outputs to DAC's one, the same. Anyway, that's the very same hum as my phono stage and alsmot at the same (far away of music level) level! More than odd...
disconnect all the input connections and see if it still does it!

Also, try disconnecting all your kit from the mains and adding back 1 at a time. I had a dodgy transformer in my CDP that was causing problems for my amp!!!
__________________
When Bitstream came out, I thought, my God, what are we going to do...? Ken Ishiwata http://www.hifisounds.co.uk
JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"
  Reply With Quote
Old 12th January 2010, 01:17 PM   #13898
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Yep Ricardo, good memory here
And yes Ian, I'll unplug all and check that.

Thanks fellows,
Matthieu
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  Reply With Quote
Old 17th January 2010, 11:13 AM   #13899
gy21 is offline gy21  Netherlands
diyAudio Member
 
Join Date: Mar 2006
Location: Drachten
Send a message via MSN to gy21
Hello.

i'm back, just bought a 2nd cd67 mkII this week and would like to modify it slightly, i'm not planning to bring it as far as ny first heavily modified cd67se.

Mod's planned, opamps lm4562, disabling hdam, disabling output caps and transistors, muting circuit.

Just wondering if it is a good idea to re use the output caps's (c655/c658), elna silmic 220uF, around the opamps, replacing then the Elna 100uf (red) (C611/C614).

Can the Elna red's be used somewhere else as well.
__________________
Hifi Setup: http://my.hifi.nl/?user=1651
Music Collection: http://www.hilbimuziekcollectie.tk
  Reply With Quote
Old 17th January 2010, 11:42 AM   #13900
diyAudio Member
 
Malefoda's Avatar
 
Join Date: Jun 2006
Send a message via MSN to Malefoda
Old Cerafine vs old Silmic, try one channel, maybe better bass?
I won't fit any LM4562 until they have at least clean 317/337 or it may sount boring. Why not a good AD device? My 2cts.

Left red Cerafine may be moved to DAC and Decoder.
__________________
QED T260, Thorens TD-318, Marantz CD-43, TK2050, JBL 4313B & MJK's OB: music!
  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



New To Site? Need Help?

All times are GMT. The time now is 04:50 AM.


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