Cambridge Audio Azur 840E Schematic, Service Manual

[ohmsweetohm]

Hi

I am trying to fix my Azur 840E Preamp from Cambridge audio. Some of the resistors are damaged and needs to be replaced. Problem is that they are burnt so bad that the color code is no longer visible.
Therefore I was wondering if anybody on this forum have the scematics or the service manual for this preamp?
Any help is appreciated 🙂

Regards
ohmsweetohm

 

[MAAC0]

http://www.google.pt/url?sa=t&rct=j...959129&usg=AFQjCNEpz8aNAXWC0FY1aSx7z88p8v8o3A

 

[ohmsweetohm]

Thanks MAACO, but the link is for the 840A Amp.
I finally got the service manual from someone i Norway 🙂
Thanks anyway 🙂

 

[sanji99]

Hi ohmsweetohm,

please send me SM for 840E, my preamp is broken, thanks a lot.

my private mail is zoran.ivacic@gmail.com

 

[Nisbeth]

Apologies for bumping an old thread, but does anyone have the 840E service manual? Just bought one with a defective volume control that I would like to fix 🙂

 

[diyralf]

Never heard of it.

 

[Nisbeth]

Fortunately someone else had, so this is now sorted 🙂

 

[Vortex666]

Hello!

I am too searching service manual for 840E and 851E
If anybody have,then please share and send it to my email: audimees@gmail.com

 

[Nisbeth]

Forwarded the one for the 840E.

 

[didiet78]

Can you share service manual for 840e? didiet78@gmail.com

 

[Nisbeth]

Done, if you didn't already get it from someone else 🙂

 

[sansa888]

Hello!
I am searching service manual for Cambridge 840E pre-amplifier.
I need to replace the encoder.
Please share it
ryzhenko1975@gmail.com
🙂

 

[AkexGeForce]

Hey. I wanted to ask you to send me a service manual for Cambridge Audio Azur 840E. I have two faults, the encoder when rotating to the right reduces the volume abruptly and Vice versa. Also, sometimes the signal in the left channel disappears, but if you rotate the encoder, then for a split second the signal is restored with each new step, but then again disappears.
I would like to ask if it is possible to send me a service manual on Azur 840E to the address AlexGeForce@gmail.com
Thanks so much

 

[Mark Tillotson]

I would investigate the soldering on the encoder, in case there's a bad or cracked solder joint leading to intermittent operation - since the control experiences a lot of external forces there may have been fatique of the connections.

 

[epascaru]

Hello,

Would you please send me a service manual for the Cambridge Audio 840E? I'm having some trouble with the volume encoder.
If possible please e-mail to epascaru@yahoo.com.
Many thanks.

Edi

 

[matze7401]

Hello, I just bought a used 840E and it also has the usual problem with the rotary encoder. Can someone post information about the encoder? What type, pin layout, equivalents and suppliers?The service manual or schematic would also help me a lot. Thank you! Matze

 

[RickySnit]

The problem with the 840e isn't the encoder, it is the poor quality volume ladder relays. You need to replace the relays. Fortunately the volume ladder relay board is modular and comes right out, unfortunately it takes a lot of relays..

 

[adason]

This thread has lots of private emails. Mods should remove those.

 

[Joerg Baar]

Hello, if the encoder develops bad output signals and the relais-ladder is working correctly using the remote, it is not the relais! Just open up the encoder and simply clean the wiper and also the etched signal-forming side. Then add a little bit of vaseline to the etched side and close it again. I`ve made this often and works!
If the volume control is developing intermittend operation, using the remote and also the knob,--it`s the relais ladder itself. The relais that were used by Cambridge are getting warm in use and develop bad contacts due to that. Especially when the lid of the amp is closed completely it gets really really warm inside. Its a good idea to simply open the lid off the preamp and get one that has ventilation holes in it, for instance the one from the Azur 840A. If the relais are bad, they must be changed by using better ones. The Fujitsu SY-9W-K will be a good choice! You need 28 of them.

IF ANYBODY IS WILLING TO SEND ME AUDIO AZUR´S ORIGINAL SERVICEMANUAL, I WOULD BE GRATEFUL.
Regards
Joerg

 

[Joerg Baar]

Here`s a somewhat unconventional solution for the preamp getting too hot inside. I lifted the lid on posts of about 1cm and closed it with some black fabric all around. Cheap and working perfect.