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Old 11th August 2003, 08:44 AM   #1
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Wink Philips CD650

Well, I bought a CD650 for 40 Euros.
At the store, even with a lens cleaning CD, it accepted 1 out of 10 CDs.
That was a risk, but I bought it.
Arrived home, took off the lid and applied the best method to clean a laser lens: a cotton bud with a little salive.
Beautiful, it plays everything now (I tested 80 min. CDRs).
I love these old CDM transports.
What's more, by looking at it, it seams the player was never opened, it's really in mint condition.
I would like to have the schematic, I'm sure there's someone who can send it to me.
I'd be very grateful.
I'm thinking also in trying the LC-Audio clock I have on my Yamaha, but unfortunately it's 16.x MHZ, and the CD650 is 11.x MHZ.
Is there a way to use it?

Oh, BTW, the user manual, on the specs page, says it has 2 dacs, but I can only see one TDA1541...
Am I missing something?

People are into high resolution formats these days and I'm buying 16bit/4x oversampling CD players from the mid 80s...
Nurse!
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Old 11th August 2003, 08:55 AM   #2
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Talking dual 16bit dac

Oh, I get it...
The TDA1541 is a "dual 16bit dac".
That's why they say it has 2 dacs.
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Old 11th August 2003, 10:14 AM   #3
guido is offline guido  Netherlands
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I have the schematics, will mail them when i log in at home (sometimes). Have/had (see other posts) a 650 myself.

Pro: some room can be created by removing the "additional filter" pcb. You need to rebuild the display PS on a small pcb. Easy modifications, i2s easy accessable. Good transport in my experience, plays all always.

Con: old version of SAA/TDA chipset, replace the DAC with 'A' version or replace by something else (1543)! CDM2 transport, hard to find. There are CDM4 replacements but also hard to find. But possible, do a search on this forum!

CRAP build: plastic, remove cover and lift a corner.... CRAP soldering, this might give failures (the SMD soldering on my one is messy). Crap connectors between pcb's, i had a failure with a bad contact. Schematics do not much reallity !!! So be aware with what i am going to sent is not the truth (connections/comp values).

I was bidding on one and my final offer was 27.5 Euro. Would not have gone higher, newer stuff with newer chipset / cdm4 is more interesting.

Just my opinion,

GuidoB

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Old 11th August 2003, 10:16 AM   #4
guido is offline guido  Netherlands
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.....do not MATCH reallity !!!

That's what i meant...
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Old 11th August 2003, 10:34 AM   #5
Bricolo is offline Bricolo  France
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quido: whate are those old versions of chipsets you're talking about? (I'd like the full reference number)

BTW, what are the new ones, and why are they better?
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Old 11th August 2003, 11:05 AM   #6
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Guido,
Thanks for the repply and in advance for the schematics.
Philips is a known "friendly" brand for the repair technicians: I'd say that 70% of the problems are caused by bad solder joints.
And I'm including TV sets here.
So it doesn't surprize me what you say.
When I put my hands on it (no time yet, other things to finish first), I'll resolder the joints as much as I can.
Yes I saw your thread, it seams that you have a dead processor.
I hope you can find another cheap 650 to solve your problem.

Bricolo, I think that Guido was talking about the SAA7210/7220.

Anyway, something tells me the TDA1541 is one of the very best dacs for 16 bit CD, when well implemented.
Or else Marantz wouldn't have used it on their flagship and very limited edition CD7.
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Old 11th August 2003, 11:43 AM   #7
Bricolo is offline Bricolo  France
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The TDA1541A is a very good dac. The 1541 (without A) seems to be considered as "average"


"Bricolo, I think that Guido was talking about the SAA7210/7220."
What's wrong with them?
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Old 11th August 2003, 12:57 PM   #8
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Default Re: Philips CD650

Quote:
[i [/i]
I'm thinking also in trying the LC-Audio clock I have on my Yamaha, but unfortunately it's 16.x MHZ, and the CD650 is 11.x MHZ.
Is there a way to use it?

In my experience the answer is yes; I have a 45Mhz LC-Audio clock at 45Mhz-sony freq- and made an experiment with a 27Mhz crystal from a DVD player.I mean that I have replaced the LC 45Mhz crystal with the 27Mhz from the DVD player and it works fine ....

In fact of music LC-Audio is not my personal preference though.

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Old 11th August 2003, 01:27 PM   #9
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Default Re: Re: Philips CD650

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Originally posted by stefanobilliani

In my experience the answer is yes; I have a 45Mhz LC-Audio clock at 45Mhz-sony freq- and made an experiment with a 27Mhz crystal from a DVD player.I mean that I have replaced the LC 45Mhz crystal with the 27Mhz from the DVD player and it works fine ....
In fact of music LC-Audio is not my personal preference though.

You replaced a 5PPM precision crystal of the LC board by a cheap and nasty one.
What I meant is if I can use the 16.xMHZ clock on the CD650.
I suppose that ther 1541 can work at 16MHZ.
Do I need to do any mod?
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Old 11th August 2003, 01:30 PM   #10
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Quote:
Originally posted by Bricolo

"Bricolo, I think that Guido was talking about the SAA7210/7220."
What's wrong with them?
It seams that these old chips put a huge amount of noise on the PSU lines.
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