Cambridge Audio 640c

[jimmything55]

Bought this player couple years back, very little play time on this unit. Now there's no audio output. Did all the general checks, and tried 2nd CD player on system, and it works fine. All appears to look OK on it. Even tried remote to check mute function, and still no audio. Heard somewhere that transistor for mute function could have gone, but am puzzled. Any help would be appreciated.

 

[Bizzel]

First off, welcome to Head-Fi!

If you've got suitable equipment, check to see if you can get some digital output from the thing. That'll narrow the problem down a little. If you're getting digital output but no analogue, at least you know the transport is working fine. I'm surprised to hear about a Cambridge Audio CDP failing after only two years, all the ones I've seen were built like tanks.

 

[jimmything55]

Thanks for the welcome. Yes, I can't understand what happened. Very low hours on this player. As far as equipment, I've got a digital muti meter, but that's about it. Haven't opened it up yet, as it uses what looks to be star driver screws that are very small which I'll have to purchase.

 

[Jigglybootch]

Like he said, check the digital output. If you get a signal that way, then it might be an easy fix. If you still get no sound, well, that's a different story.

 

[jimmything55]

Will the muti meter work to detect digital out?

 

[Jigglybootch]

Quote:

Originally Posted by jimmything55 /img/forum/go_quote.gif Will the muti meter work to detect digital out?

I would think so.

 

[jimmything55]

I'll do it....

 

[sejarzo]

Quote:

Originally Posted by Jigglybootch /img/forum/go_quote.gif I would think so.

How is he going to do that? What range should he use, and what should he be looking for?

What I can tell you is this......I just checked the known good digital output of a sound card with a DMM on various low voltage AC and DC ranges and nothing registered.

jimmything55......you might want to connect it with a digital cable to an a/v receiver or a different DAC input and see if you can get digital output. Regardless of where the failure exists, though, it will have to go to a qualified service shop.

 

[Jigglybootch]

Quote:

Originally Posted by sejarzo /img/forum/go_quote.gif How is he going to do that? What range should he use, and what should he be looking for?

Hell I don't know. But I'm sure there's a way to rig it up to check it with a MM. Probably not an easy way, though, so he's better off just running the digital out to a DAC of some kind and testing that way.