Philips cd753

nonos · 11th June 2004, 05:34 AM

Hello,

I look for the Philips CD 753,723 schematic or service manual.
I would like to make a transport with this CD.

Can anybody help me?

Thanks

brian851 · 30th July 2009, 12:32 AM

Here you go.

:-)

UV101 · 6th December 2010, 08:59 PM

Hi, did you manage to find a copy of this manual? I got quite a few on my links page but not this one and I'm about to modify one for a friend. If you have one, I'd be grateful Thanks :-)

stainless · 15th December 2010, 01:55 PM

service manual

CD723

Service manual, eprom result list | ElektroTanya | Service manuals and repair tips for electronics experts

CD753

Service manual, eprom result list | ElektroTanya | Service manuals and repair tips for electronics experts

UV101 · 17th December 2010, 08:43 AM

Many Thanks :-)

JosM · 14th April 2011, 08:14 PM

Could someone tell me what kind of modifications he has made? I'am also very interested in de CD 753.
Thanks a lot

UV101 · 14th April 2011, 09:24 PM

Hi, I modded one of these for a friend. They are very very good as std. In fact they sound better than they look like they should.

I replaced the smoother in the psu (+10v before the reg) with much larger 22,000uF Panasonic TSUP's, Built a separate +/-12v regulated supply for the opamp stage and replaced the opamp with a LME49720HA, split the 5v rails for the DAC and fed with 3 independent regulators. I replaced lots of decoupling caps with Rubycon ZA's.

On the transport, I replaced the clock with decent oscillator powered from a low noise reg and replaced several caps with ZA's again.

I'm sure I did something with the elco's in the signal path on the output but I cant remember what!!!

The result was stunning. This player looks like a low end toy but would seriously give some "hi-fi" a run for its money with mods.

JosM · 15th April 2011, 08:30 PM

Thanks for your comment. I will replace the opamp with a LM4562 and I recognise many of your mods.

UV101 · 4th May 2011, 06:53 AM

I found a couple of pics showing the mods I did. Clock with decent reg, big caps on the rails, lots of small ZA caps for local decoupling and 3 separate regs on the dac. Oh and the opamp

JosM · 5th May 2011, 08:20 PM

Very impressive. I have still a modification for you. You could remove the "mute" transistors at the output of the opamp. It is known that these transistors influences the sound, produced by the CD player.

11th June 2004, 05:34 AM	#1
nonos diyAudio Member Join Date: Jan 2004 Location: szhely	Philips cd753 Hello, I look for the Philips CD 753,723 schematic or service manual. I would like to make a transport with this CD. Can anybody help me? Thanks

30th July 2009, 12:32 AM	#2
brian851 diyAudio Member Join Date: Jul 2009	cd723 service manual Here you go. :-)

6th December 2010, 08:59 PM	#3
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Hi, did you manage to find a copy of this manual? I got quite a few on my links page but not this one and I'm about to modify one for a friend. If you have one, I'd be grateful Thanks :-) __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"

17th December 2010, 08:43 AM	#5
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Many Thanks :-) __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"

14th April 2011, 09:24 PM	#7
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	Hi, I modded one of these for a friend. They are very very good as std. In fact they sound better than they look like they should. I replaced the smoother in the psu (+10v before the reg) with much larger 22,000uF Panasonic TSUP's, Built a separate +/-12v regulated supply for the opamp stage and replaced the opamp with a LME49720HA, split the 5v rails for the DAC and fed with 3 independent regulators. I replaced lots of decoupling caps with Rubycon ZA's. On the transport, I replaced the clock with decent oscillator powered from a low noise reg and replaced several caps with ZA's again. I'm sure I did something with the elco's in the signal path on the output but I cant remember what!!! The result was stunning. This player looks like a low end toy but would seriously give some "hi-fi" a run for its money with mods. __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"


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15th December 2010, 01:55 PM	#4
stainless diyAudio Member Join Date: Feb 2007 Location: western aust	service manual CD723 Service manual, eprom result list \| ElektroTanya \| Service manuals and repair tips for electronics experts CD753 Service manual, eprom result list \| ElektroTanya \| Service manuals and repair tips for electronics experts

14th April 2011, 08:14 PM	#6
JosM diyAudio Member Join Date: Feb 2008 Location: The Hague	Could someone tell me what kind of modifications he has made? I'am also very interested in de CD 753. Thanks a lot

15th April 2011, 08:30 PM	#8
JosM diyAudio Member Join Date: Feb 2008 Location: The Hague	Thanks for your comment. I will replace the opamp with a LM4562 and I recognise many of your mods.

4th May 2011, 06:53 AM	#9
UV101 diyAudio Member Join Date: Dec 2008 Location: Oxford	I found a couple of pics showing the mods I did. Clock with decent reg, big caps on the rails, lots of small ZA caps for local decoupling and 3 separate regs on the dac. Oh and the opamp __________________ When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk Restek Fantasy, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"

5th May 2011, 08:20 PM	#10
JosM diyAudio Member Join Date: Feb 2008 Location: The Hague	Very impressive. I have still a modification for you. You could remove the "mute" transistors at the output of the opamp. It is known that these transistors influences the sound, produced by the CD player.

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