CD-100 problem - 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 6th April 2006, 07:47 PM   #1
diyAudio Member
 
Join Date: Apr 2005
Location: Turin
Default CD-100 problem

Good afternoon,
I have found an old CD100 Philips.
The laser was broken but I had an old CD204 and I changed the CDM0 with the CDM1 of the 204.
Than I changed all the electrolitic capacitors of the power supply to solve a terrible hum problem.
Now all seems to work well : the only little problem is that when I start the CD (so it is cold) for half a minute it is not able to play the disc : the disc begin to run very fast but it is not able to find the first track.
After half a minute it starts normally.
Another question : is it normal that after 1/2 - 1 hour of work the capacitors of the power supply became quite hot ? And is it normal that when you close the cover the disc doesn't start, but start only when you press play ?
Thank you in advance for your help.
Best Reghards.
Marco
__________________
Marco Vaccarino
  Reply With Quote
Old 6th April 2006, 08:45 PM   #2
Netlist is offline Netlist  Belgium
diyAudio Moderator Emeritus
 
Netlist's Avatar
 
Join Date: Jan 2003
Marco,
The fact that the player needs a little warm up could be and indication that one or more caps are end of life.
Make sure you respected the correct polarity when you replaced the PSU caps. Check that first to make sure none of them explode.
As for the play button that has to be pressed, no idea, some players start without, some don't.

/Hugo: )
  Reply With Quote
Old 6th April 2006, 10:02 PM   #3
diyAudio Member
 
Join Date: Mar 2005
Location: Derby in England
Default And is it normal that when you close the cover the disc doesn't start, but start only

I think the CD100 is first generation top loader. These need to be activated by pressing start button before they readTOC. These machines do run rather warm after 30 mins or so the heatsink at rear will be warm to touch(but not hot).
The fact that it only reads TOC after 30 minutes may be capacitor problem, but maybe the replacement laser is not set up correctly.
You can get some idea of what's happening by watching the laser arm with the lid open.When you press play, the arm should swing to centre, oscillate up and down, and it should be possible to see the red glow of the laser.
__________________
If you're in control you're not going fast enough
  Reply With Quote
Old 7th April 2006, 07:20 AM   #4
jives11 is offline jives11  Europe
diyAudio Member
 
jives11's Avatar
 
Join Date: Mar 2004
Location: Hampshire
Default Re: And is it normal that when you close the cover the disc doesn't start, but start

Quote:
Originally posted by tony.garner
I think the CD100 is first generation top loader. These need to be activated by pressing start button before they readTOC. These machines do run rather warm after 30 mins or so the heatsink at rear will be warm to touch(but not hot).
The fact that it only reads TOC after 30 minutes may be capacitor problem, but maybe the replacement laser is not set up correctly.
You can get some idea of what's happening by watching the laser arm with the lid open.When you press play, the arm should swing to centre, oscillate up and down, and it should be possible to see the red glow of the laser.
It could also be a dry joint. Search this forum for 'griplets'. These are the through-board rivets which join the tracks to the ground plane on the reverse. Many problems in early Philips CD players are solved by removing the solder, drilling through and soldering wire links through. It's a very popular fix to a host of problems including the warmup (my CD104 had the same problem though took nearer 30 minutes - fitting wires through fixed it). It takes a while as there may be > 10 griplets depending on the board and there may also be 2 boards (servo & decode) - both with the dreaded griplets.
  Reply With Quote
Old 7th April 2006, 01:17 PM   #5
phimor is offline phimor  Australia
diyAudio Member
 
phimor's Avatar
 
Join Date: Feb 2004
Location: Adelaide
Hello Marco,
I see you changed the caps in the power supply; good, but you're only half done. There are many more electrolytic caps on the servo and decode boards, as well as the transport (laser) board. Mostly 33 uf and 22 uf. Please change all, a big job, but its the only way.

Sorry Jives, but there are no griplets in the CD100...

I doubt there is any adjustment needed on the laser. Please resist 'playing' with the adjustment. Only pain and suffering await you

Did you change the clamping puck in the lid as well?

From memory, I think the motor spindle is a different shape for the cdm1 and cdm0.

And yes, I can confirm that the player will only read the TOC after 'play/next' is pressed. But you can program the track selection before hand also.

Tony, I don't think you can see the laser with the lid down. If its open the interconnect will defeat the laser supply, so nogo with the lid open. Its a 'safety' feature.



Cheers

Philippe
__________________
"Everything else is gaslight"
  Reply With Quote
Old 7th April 2006, 05:06 PM   #6
jives11 is offline jives11  Europe
diyAudio Member
 
jives11's Avatar
 
Join Date: Mar 2004
Location: Hampshire
Quote:
Originally posted by phimor
[B]
Sorry Jives, but there are no griplets in the CD100...
/B]


Sorry - I could have sworn I read they were also in the CD100 & CD101 (+ marantz/meridian derivatives). Oh well, sorry for the false lead.
  Reply With Quote
Old 9th April 2006, 09:45 PM   #7
diyAudio Member
 
Join Date: Apr 2005
Location: Turin
Hello,
thank you for your support and for yours ideas.
I tried to put again the old CDM0 in the CD100 and I tried to see if the laser was really died or not : so I have not opened the CD cover to avoid the switch that stop the laser, but I opened all the upper plastic cover of the CD.
So leaving closed the CD cover, I noticed that the laser is NOT died.
Now I think that something is not good with the power supply. Infact I tried to read the CD with the CDM0 but no reading : the laser goes to center position, try to find focus but continue to move orizontally (2/3 mm, like a vibration) for 3/4 seconds and then stops. No turns by the motor.
Then I tried again with my CDM1 : same results !!
I put the CDM1 in the original CD204 and there functions perfectly.
Thank you for your help.
Best Regards.
Marco
__________________
Marco Vaccarino
  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
mtx amp problem [[help!!]] fuzzypinkhat45 Car Audio 3 8th July 2008 06:34 AM
CDM 2/29 Problem HELP! Bassivus Digital Source 29 23rd December 2007 11:00 AM
FRD/ZMA Problem Twisted85 Multi-Way 5 4th December 2006 02:19 PM
p3a problem MaXiZ Solid State 17 16th July 2005 08:14 AM


New To Site? Need Help?

All times are GMT. The time now is 01:50 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