Philips cd104 cd-player
 

Hello,

This very old but very nice cd-player has got a hiss in one of the
channels. I tried to locate it but no luck so far. Someone told me that
this was a common problem on this model. It sounds like a defective
condensator but it probably isn't.
Has anyone got any idea?
Thanks,

Derk-Jan

"Derk-Jan Gerritsen" wrote in message
...
Hello,

This very old but very nice cd-player has got a hiss in one of the
channels. I tried to locate it but no luck so far. Someone told me that
this was a common problem on this model. It sounds like a defective
condensator but it probably isn't.
Has anyone got any idea?
Thanks,

Derk-Jan

"condenser" is a very old but very nice term for a capacitor. :)

Make sure the cable connectors are clean and the cable is firmly plugged in.
Wiggle the cables gently and see if they're broken internally.
If dirty connectors and/or bad cable isn't the prob, there may well be a bad
cap inside the unit.
Could also be cold solder joints...

Excuse my dutch! With a name like yours I should consider consulting my
dictionary. Thanks for the response. I changed the cables already. That
didn't help. The problem is that it doesn't do the hiss/distortion all
the time.
Do you have any idea where to look? Is it in the analogue part of the
audio circuit?
Any tips for finding a bad cap? In the old days we used the cold spray
or should I just change them all.....?

Derk-Jan

In article , Ray L. Volts
wrote:

"Derk-Jan Gerritsen" wrote in message
...
Hello,

This very old but very nice cd-player has got a hiss in one of the
channels. I tried to locate it but no luck so far. Someone told me that
this was a common problem on this model. It sounds like a defective
condensator but it probably isn't.
Has anyone got any idea?
Thanks,

Derk-Jan

"condenser" is a very old but very nice term for a capacitor. :)

Make sure the cable connectors are clean and the cable is firmly plugged in.
Wiggle the cables gently and see if they're broken internally.
If dirty connectors and/or bad cable isn't the prob, there may well be a bad
cap inside the unit.
Could also be cold solder joints...

On Tue, 17 Aug 2004 01:00:13 +0200, Derk-Jan Gerritsen
put finger to keyboard and
composed:

This very old but very nice cd-player has got a hiss in one of the
channels.

I have a copy of the service manual. Would you like me to scan the
decoder circuit for you? The relevant ICs appear to be 6519/6520
(TDA1540 DAC), 6523/6525 (NE5532N op-amp), and 6517 (SAA7030).

IIRC, the PCBs in these Philips/Marantz CD players had problems with
thru-hole interconnects between the top and bottom ground planes.


- Franc Zabkar
--
Please remove one 's' from my address when replying by email.

Hello Derk!

Greetings from Brazil!

I also have a CD-104 CD Player, these are very reliable machines. I
think your problem can be either a bad cap or bad op-amp. Look for the
output operational amplifier. If you have two, one for each channel,
you can swap them to see if the problem goes to the other channel. The
capacitors are worth changing because they are cheap, although the old
Philips Germany capacitors are kind of a trademark on these units.

If you need more info, feel free to ask.

Marcos


Derk-Jan Gerritsen wrote in message ...
Hello,

This very old but very nice cd-player has got a hiss in one of the
channels. I tried to locate it but no luck so far. Someone told me that
this was a common problem on this model. It sounds like a defective
condensator but it probably isn't.
Has anyone got any idea?
Thanks,

Derk-Jan