Canuck Audio Mart Hifi and Audio ForumCanuck Audio Mart Hifi and Audio Forum
It is currently Fri Dec 15, 2017 12:00 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 50 posts ]  Go to page Previous  1, 2, 3, 4
Author Message
PostPosted: Sat Jan 21, 2017 2:53 pm 
Offline
User avatar

Joined: Wed Jul 23, 2008 5:04 pm
Posts: 1767
Location: saskatoon, SK, CA
dcrooks wrote:
Teo Audio wrote:
The kind of device that does such things, tends to be the analog alps digital stepper control.
It has a track divided into two, an inner and outer..and each track is offset from the other.
Since it is actually almost the same design as a standard analog volume pot, they wear out.


Really? The consumer units are mechanical? I've worked with these sorts of encoders in a lot in mechanical gear, they've all been optical, with a glass plate with an etched chrome plating on one side, in the pattern you describe, that blocks the light between an LED and a photo diode. No wear... Only the occasional LED or diode failure, but generally they last decades of 24/7 use.

Sounds like something a retrofit kit could be built to cure!

Cheers, Dave


and its not just consumer units. more than one way to get a pulse....with less parts. and like you said there still will be the odd led or diode failure.

-- 21 Jan 2017 22:54 --

Prestige wrote:
Cambridge has well documented issues with volume controls and lasers failing in their cd players.

Take care stinkydinkythecat.


any links to these documents?


Top
 Profile  
Reply with quote  
PostPosted: Sat Jan 21, 2017 2:55 pm 
Offline

Joined: Thu Jan 10, 2008 10:03 am
Posts: 411
Location: cambridge, ON, CA
Just to be clear, the Xindak uses an Alps control.


Top
 Profile  
Reply with quote  
PostPosted: Sat Jan 21, 2017 3:00 pm 
Offline
User avatar

Joined: Wed Jul 23, 2008 5:04 pm
Posts: 1767
Location: saskatoon, SK, CA
waxwings wrote:
Bad news:Typical problem with Cambridge Audio receiver's volume control. The grease the factory uses is not dielectric :roll: and can cause the control to run amok usually after a short time in service.
Good news: A tech can disassemble the control clean it out then use the correct lubricant and Bob's your uncle!


Really?! if the grease was conductive what do you think the end result would be?

the issue is due to the hardening of the grease.

here's a video how one works https://www.youtube.com/watch?v=v4BbSzJ-hz4

grease globs fracks the signal.

this is not just a Cambridge issue.


Top
 Profile  
Reply with quote  
PostPosted: Sat Jan 21, 2017 3:17 pm 
Offline
User avatar

Joined: Wed Jul 23, 2008 5:04 pm
Posts: 1767
Location: saskatoon, SK, CA
[

-- 21 Jan 2017 23:22 --

joe mandel wrote:
Just to be clear, the Xindak uses an Alps control.


but one usually thinks quality when alps is mentioned?


Top
 Profile  
Reply with quote  
PostPosted: Sat Jan 21, 2017 3:52 pm 
Offline

Joined: Thu Jan 10, 2008 10:03 am
Posts: 411
Location: cambridge, ON, CA
BinkyTheCat wrote:
[

-- 21 Jan 2017 23:22 --

joe mandel wrote:
Just to be clear, the Xindak uses an Alps control.


but one usually thinks quality when alps is mentioned?

I agree with you, but every "famous ", manufacturer has quality issues from time to time.


Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 50 posts ]  Go to page Previous  1, 2, 3, 4

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group