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I do have a Cambridge Audio CD5 and I was just getting ready for some dinner music, but no sound coming from the CD.Tried some different cables and source and it is definitely the CD player.
Wondering if there could be a mute relay that is not 'closing'.
Any idea where I should look first?
Edits: 05/17/17Follow Ups:
Had same problem with my Marantz Sa-11s2 - was in the audio mute circuit. Marantz repaired and works fine now.
Here is a photo of the main PCB inside the CD5
Those types of connectors are cheap and can easily have problems. Unplugging it and re-plugging it may remove any corrosion and it might be the solution
Had a busy day today so I just spend a little time on unplugging the connections on the PCB and reconnecting them, but still no sound.
I assume it's more of a electrical part problem and probably over my abilities to check.
The most common problems are around the CD failing to spin. *the motor typically will not be able to start the CD spinning from a particular spot.
Sometime manually starting the CD it will work.
Sometime it is a failure of the laser. This can be the actual laser or the electronics powering it. Even a simple capacitor may be all that is wrong.
Have you tried other CDs?
One other possible thing is the spindle level has been changed by accident.
Like two CDs in the tray, or a CD not placed correctly.
Anyway, the Cd rests of a plastic gizmo which in many players is a FRICTION fit to the motor spindle.
If it is out of spec, (too high or too low) no play. IF the Cd spins. note is it rubbing?
Also the CD will spin maybe twenty revolutions and if the laser is failing to read, the CD will stop turning.
This may be either the laser is not working, or it cannot read the menu on the CD.
Another thing may be DIRT on the laser lens so big the laser just cannot read anything right.
I have the cover off, CD is spinning normal, Display is showing normal CD running action
You may have a button which mutes or turns off the audio if the digital output is used?
Or a volume control which is 100% off?
Sometimes a remote control for volume can go crazy, and constantly turn off something, like the volume?
Does it have a headphone out? if the headphone out mechanical contact (in the socket) is broken, it may cause the regular sound out to have no sound.
If the player is actually reading off the disc like it is playing I would be way more confident the player can be fixed.
Ordinary sound circuits away from the digital section are way easy to check
If you have it open. I would (with it turned off!!) pull off the small milti pin connectors one at a time and put it back in place. CD players ALWAYS have several of them. White or black thin multipin like three to eight pins.. connectors from one area to another on the circuit boards. Pull each off and just put it back. Sometimes they lose contact inside.
What does the display say when you close the drawer? If you just close it, it should read the Table of Contents and then display the total number of tracks and the total time on the disc. If you press "Play" it should display track "1" and also begin counting elapsed time.
If these things are not happening, the most likely problem is a laser failure. If these things are happening but with no sound, then there may be a problem in the electronics - often the power supply.
One can usually hear mechanical activity from inside after the drawer closes. Sometimes it helps to press one ear on the top cover. Good luck!
The display shows normal operation.
Shows all the track, runs just like it should and shows the time 'ticking away' just if it played music.
I don't think it is the power supply itself, that is just a very simple transformer, though I have not checked the zenors on the main board.
I have read online about another Cambridge Audio CD player, but another model. There it turned out a resistor in front of the mute relay had gone bad. I have one relay in my CD player, checked many resistors around that area and all show resistance.
So I am thinking about going into town and trying to find a mute relay.
If you have a friend with an oscilloscope and a copy of the schematic, just trace the analog signal from the output pins on the DAC chip back towards the output jacks. At some point it will stop and that is where your problem lies.
The fact that both channels are affected points towards the power supply, as that is one of the few things in the analog circuitry that is common to both channels. Good luck!
The Power supply part looks rather small on the pCB and it may be more difficult that I am capable.
.
marc g. - audiophile by day, music lover by night
You mean like turning it off and then back on?
When you tried another source, did you plug it into the same input the CD player was in? Not sure if your test was to rule out a bad amplifier, so testing the input on your preamp/receiver would be in order too. Unless you have another system to plug the CD player into whereby you experience the same issue, then definitely the CD player is the culprit.
marc g. - audiophile by day, music lover by night
Edits: 05/17/17
Tuner is playing through the same amp, so I plugged the CD player into the tuner input - NO SOUND.
Plugged the CD player in another amp - NO SOUND
I looked up the manual and see the player has a mute feature, apparently accessible via the remote. Do you have the remote?
marc g. - audiophile by day, music lover by night
I do have a remote, but there is no mute on the remote or CD player.There is a mute function on the Model 10 according to the manual
Edits: 05/17/17
You didn't mention the name "Topaz" as part of the players model number, but what I came up with was the manual for the Cambridge Audio Topaz CD5, which has a remote with a mute button on it. See page of 6 of 10 of the linked manual. Did you buy the player new? Just asking in case you bought used and perhaps didn't get the remote. Even if that was the solution, it wouldn't explain how it got triggered in the first place. Best of luck to you on this.
marc g. - audiophile by day, music lover by night
Sorry. This is NOT the Topaz, but and older model.
Bought it used a few years ago.
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