Philips CD624

jantinus · 3rd September 2008, 08:25 PM

Hello All,

After cleaning up my workroom I found a cd624 lying around.
It looks great to modify and after reading some old posts I want to give it a try.
Just wondering of this modded players are still running and what mod improved the sound most?

I quess I will start with the power supply and the analogue output. Maybe someone can help me with a service manual for modding the digital circuit.

Best regards,

Roelof

es44 · 3rd September 2008, 09:18 PM

Not the best quality, but hopefully you can get something out of it: CD624 SM
Best regards
Ebbe

poynton · 4th September 2008, 09:19 AM

There is not a huge amount that can be done to the DAC side of things. This is a fairly early bitstream player.

Adding an extra transformer or 2 to supply the analog side of things would help as would upgrading the existing with schottky diodes and (slightly) larger/better caps.
Extra regulators could also be installed for just about every supply line and chip, if you want to go the whole hog.

The usual items such as removing the headphone output (easy on this model) and also the muting circuits. Replacing the output opamp, damping the case and CDM, screening the chips with copper foil, fitting a "display Off" switch etc

Andy

jantinus · 4th September 2008, 08:17 PM

Thanks Ebbe for the manual. Just removed the circuitboard out of the housing. Now I can find and trace the components much easier.

Like Andy suggested, I will concentrate on the power regulations and output amp. Maybe I will replace the X-tal for a Tent XO, but first the powersupply.

Best regards,

Roelof

vubkevin · 30th July 2009, 11:02 PM

can anybody upload the philips cd624 service manual for me? I need it to fix my cd player.

vendetta · 31st July 2009, 03:55 AM

vubkevin
give me your email

vubkevin · 31st July 2009, 09:56 AM

my email : vubkevin at hotmail.com
Thanks :

3rd September 2008, 08:25 PM	#1
jantinus diyAudio Member Join Date: Sep 2005 Location: Netherlands	Philips CD624 Hello All, After cleaning up my workroom I found a cd624 lying around. It looks great to modify and after reading some old posts I want to give it a try. Just wondering of this modded players are still running and what mod improved the sound most? I quess I will start with the power supply and the analogue output. Maybe someone can help me with a service manual for modding the digital circuit. Best regards, Roelof

4th September 2008, 09:19 AM	#3
poynton Magneto the Gravity Man diyAudio Member Join Date: Mar 2005 Location: A life on the ocean waves when I'm not at home in N. Wales (but I'm not Welsh so no sheep jokes!)	There is not a huge amount that can be done to the DAC side of things. This is a fairly early bitstream player. Adding an extra transformer or 2 to supply the analog side of things would help as would upgrading the existing with schottky diodes and (slightly) larger/better caps. Extra regulators could also be installed for just about every supply line and chip, if you want to go the whole hog. The usual items such as removing the headphone output (easy on this model) and also the muting circuits. Replacing the output opamp, damping the case and CDM, screening the chips with copper foil, fitting a "display Off" switch etc Andy __________________ If it ain't broke, break it !! Then fix it again. It's called DIY !

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3rd September 2008, 09:18 PM	#2
es44 diyAudio Member Join Date: Apr 2005 Location: Fredericia, DK	Not the best quality, but hopefully you can get something out of it: CD624 SM Best regards Ebbe

4th September 2008, 08:17 PM	#4
jantinus diyAudio Member Join Date: Sep 2005 Location: Netherlands	Thanks Ebbe for the manual. Just removed the circuitboard out of the housing. Now I can find and trace the components much easier. Like Andy suggested, I will concentrate on the power regulations and output amp. Maybe I will replace the X-tal for a Tent XO, but first the powersupply. Best regards, Roelof

30th July 2009, 11:02 PM	#5
vubkevin diyAudio Member Join Date: Jul 2007	can anybody upload the philips cd624 service manual for me? I need it to fix my cd player.

31st July 2009, 03:55 AM	#6
vendetta diyAudio Member Join Date: Nov 2008	vubkevin give me your email

31st July 2009, 09:56 AM	#7
vubkevin diyAudio Member Join Date: Jul 2007	my email : vubkevin at hotmail.com Thanks :

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