Replacing a CDM9/65 laser unit - 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 3rd April 2004, 04:40 PM   #1
Sarion is offline Sarion  Netherlands
diyAudio Member
 
Join Date: Apr 2004
Location: Amsterdam
Question Replacing a CDM9/65 laser unit

Hi everyone!

I have a Rotel RCD975 cd player, and it is skipping on some CDs. Seeing as the player is quite a few years old now, I may want to replace the laser unit. The unit originally in this player is the CDM9/65, but I understand this is not available anymore. I can however get a CDM9/44 unit.

Does anyone know if this unit will work in my player? I`ve searched the forums and the Net, but have not yet been able to find any more information!

Thanks in advance for your replies!

Best regards!
  Reply With Quote
Old 3rd April 2004, 08:13 PM   #2
Cobra2 is offline Cobra2  Norway
DIY !
diyAudio Member
 
Cobra2's Avatar
 
Join Date: Apr 2002
Location: Stavanger, Norway
Send a message via Skype™ to Cobra2
It seems that the laser-part is the same on all CDM 9...but the mounting/housing/tray may differ.
So I think you can do the same as I did with a CDM 4....:
http://www.diyaudio.com/forums/showt...043#post273043 *

Maybe worth checking...?

Arne K
__________________
Don't believe everything you think...
  Reply With Quote
Old 6th April 2004, 10:45 PM   #3
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
I have a spare CDM9/65 and a CDM9/44 ( one is new in box, can't remember which one. Both are original Philips ). I have to warn you that these are very expensive. It may be more convenient to buy a cdplayer with a good working CDM9...
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  Reply With Quote
Old 6th April 2004, 10:51 PM   #4
Magura is offline Magura  Denmark
diyAudio Member
 
Magura's Avatar
 
Join Date: Oct 2003
Location: Denmark, Viborg
Out of curiousity...how expensive and where to buy??

Magura
__________________
Everything is possible....to do the impossible just takes a little while longer.
www.class-a-labs.com
  Reply With Quote
Old 6th April 2004, 11:13 PM   #5
Sarion is offline Sarion  Netherlands
diyAudio Member
 
Join Date: Apr 2004
Location: Amsterdam
Thanks for your replies!

I`ve found out that CDM9/44 laser is available for about 50 euros, new: www.n-tronics.nl

The /65 is a different story however: can`t find it anywhere! Well, except from the above post, of course!

How much would the /65 cost, Jean-Paul?

Has anyone ever tried to replace a /65 with a /44???

Best regards,

Berend
  Reply With Quote
Old 7th April 2004, 11:00 AM   #6
diyAudio Member
 
Join Date: Apr 2004
Location: Skene
Hi I have bought a cdm9/65 drive for a little above 100

My mechanism for loading the tray has broken down so I have never used the spare part cdm9/65

I bougth a Teac VRDS T1 instead ..
  Reply With Quote
Old 8th April 2004, 01:55 PM   #7
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
I have a Philips CD-931 with a CDM 9/44, I believe. I originally attributed the skipping to the disastrous decoupling and grounding, but that was only temporal remedy. In the end, a drop of oil on the ball that the arm pivots on was the cure.
  Reply With Quote
Old 8th April 2004, 02:21 PM   #8
Sarion is offline Sarion  Netherlands
diyAudio Member
 
Join Date: Apr 2004
Location: Amsterdam
Quote:
Originally posted by capslock
I have a Philips CD-931 with a CDM 9/44, I believe. I originally attributed the skipping to the disastrous decoupling and grounding, but that was only temporal remedy. In the end, a drop of oil on the ball that the arm pivots on was the cure.
Interesting! The skipping mostly occurs at the very beginning of CDs, I think that it may indeed have something to do with lubrication/friction.

I`ll try and lube the ball. Does this mean I have to open up the laser unit? If you could tell me where to lubricate? I added a picture of a unit.

Thanks!

Berend
Attached Images
File Type: jpg cdm9.jpg (40.0 KB, 572 views)
  Reply With Quote
Old 8th April 2004, 02:54 PM   #9
Sarion is offline Sarion  Netherlands
diyAudio Member
 
Join Date: Apr 2004
Location: Amsterdam
Here`s a picture of a cdm9/44:
Attached Images
File Type: jpg cdm9.jpg (40.0 KB, 538 views)
  Reply With Quote
Old 8th April 2004, 11:41 PM   #10
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
Just checked. The 65 is a practically new one ( from an unused cdromplayer, yes they existed ) without box and the 44 is new in sealed box.

Try to lubricate first. Turn the unit upside down to see where the ball is. There were hints about what oil to use in older threads. I think it was automatic gearbox lubricant IIRC. Never did much with CDM9 so don't ask me. I use light oil on other CDM's but only if it is really necessary.
__________________
It's only audio. Official member of the Norske Brillegeit Gang.
  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
nad 510 laser unit pipedreams Digital Source 2 8th January 2009 11:27 PM
Phillips CDM9/44 Laser Mechanism - Sealed NOS ! Audionutz Swap Meet 11 11th December 2008 09:17 AM
Think I blew it replacing laser unit kora Digital Source 7 5th June 2005 05:30 PM
14 Units NOS Philips CDM9/44 Laser Mechanism tone Swap Meet 2 18th October 2004 05:00 AM
CDM9 servo/control pcb.....replacing the opamp tbla Digital Source 6 30th September 2004 02:28 PM


New To Site? Need Help?

All times are GMT. The time now is 02:03 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