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Old 17th June 2004, 09:45 PM   #1
Tor M is offline Tor M  Norway
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Location: Haugesund
Question Need some help from Philips experts.

Hi!

I finaly came around to test my philips cd 820 with a new clock and a internal nos I2S direct dac based on feddes nonoz3 dac.

I have removed the saa7220 filter, and added the tent clock to the solder pad where the Xsys pin of the filter used to be, and stole the I2S signal from where pin 1,2 and 3 of the filter used to be.

The clock is for now powered from a 9V battery, and the dac is powered from a 12 V 7,2Ah battery.

First: The sound is brilliant! I have only listened to it for a couple of hours, and I have some BlackGates in there that probably need some burn in, but still it sounds wonderful!

But I ran in to some trouble

When I pause the player it does not get silent, but act exactly like when you have a big scratch on your cd that your player can`t get by.

When I change the track it seems like it fast forward the last few seconds of the last track before it changes to the track I have chosen.

And once when I tried pausing and skipping at once I got an error message, I think is was "P 02".

And last, in the middle of my listening session the remote control suddenly stopped working!!
It is not the remote that is causing the problem (I have a spare Marantz cd40 and this remote didn`t work either.)

Anybody who have any suggestion on what is causing theese problems?

Do the removing of the saa7220 have something to do with it? I thought it was just a digital filter and nothing more.........

I tried adding a 1M resistor between the X-in an Xout pins on the saa7310 decoder because Jean-Paul told me in another threat that he had experienced strange behaviour going without such an resistor, this didn`t help.

I have not done any other things to the player, exept changing the decoupling cap for the decoder to a BlackGate Nx.

Hope somebody can help me out!

Regards

Tor Martin
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Old 17th June 2004, 10:02 PM   #2
lucpes is online now lucpes  Romania
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I really don't think this is the culprit, but did you connect pin 11 of the SAA7210 (MUTE) to pin 23 (MUSB) of SAA7220 after the mod (muting function enable)?
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Old 17th June 2004, 10:03 PM   #3
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Cool "Philips Expert"

Hi Tor,
To restore the muting function see:
http://xoomer.virgilio.it/hi_fi/com.htm
You probably broke one of these stiff single core wires those idiots at Philips were using back in time. With some care you can open the connector and attach the wire again. Be carefull.
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Old 17th June 2004, 10:07 PM   #4
lucpes is online now lucpes  Romania
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Default Re: "Philips Expert"

Offtopic - solid core wires

Quote:
Originally posted by Elso Kwak
You probably broke one of these stiff single core wires those idiots at Philips were using back in time.
Add idiots @ Bang & Olufsen & lots others to this bunch Seriously, if you think of tinkering around with a piece of vintage gear the first thing to do is replace all those crummy wires.
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Old 17th June 2004, 10:36 PM   #5
Tor M is offline Tor M  Norway
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Hi!

Thanks for answering!

I have read about this muting trick before, but ofcourse I had forgotten all about it!
This is probably the solution

This will be pin 18 of the smd saa7310, the mute pin.

Elso, the solidcore wire you are talking about is the connection between the display/control pcb to the main pcb, the remotecontrol signals?

Thank you very much!

Tor Martin
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Old 18th June 2004, 07:38 AM   #6
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Wink Silly wires

Quote:
Originally posted by Tor M
Hi!
Elso, the solidcore wire you are talking about is the connection between the display/control pcb to the main pcb, the remotecontrol signals?

Thank you very much!

Tor Martin
Hi Tor,
In my CD650 those silly wires where everywhere. You have to check them.
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Old 18th June 2004, 07:44 AM   #7
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Default Seems like you have your answer.....

Quote:
Do the removing of the saa7220 have something to do with it? I thought it was just a digital filter and nothing more.........
Muting.......

Digital output..........

Clock generation.........

All can be worked around, one way or another.

Jocko
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Old 18th June 2004, 01:30 PM   #8
Tor M is offline Tor M  Norway
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Default Re: Seems like you have your answer.....

Thanks for answers!

I hope I got time to look in to it today.

Quote:
Originally posted by Jocko Homo


Muting.......

Digital output..........

Clock generation.........

All can be worked around, one way or another.

Jocko
Hi Jocko

I forgot about the muting, the other two I knew about. I`m feeding the digital filter directly with a clocksignal from a tent XO, the digital output I don`t need at the moment........

Have a nice weekend, everyone!

Tor Martin
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Old 20th June 2004, 11:17 PM   #9
Tor M is offline Tor M  Norway
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Hi folks!

Just letting you know that my player is working now, even the remote.

The muting trick worked.

Bad solder joint on the resistor in the supply line for the IR.diode caused the remote trouble.

I`m happy!

Thanks

Tor Martin
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