Question about Cambridge Audio 640R 7.1 Channels Receiver

7 Answers

I have a Cambridge audio amp 640r , the remote work intermittently now the amp wont turn on i only have a blue dot on the screen. can anyone help please

Posted by on

Ad

7 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Omg I have the same problem with this small blue dot in the middle, the rceiver is not going on. Did anybody find any solution??

Posted on Jun 23, 2012

  • Mud man May 27, 2016

    Mine did the same I just pulled optic cable out vaccummed it . Dropped it a few times turned it on and off a few times . And started working again haven't had problem again I have a sneaking suspicion it was the optic cable just at a wild guess ...??? Who knows try everything ha ha.. Talk to it maybe even I sweared at it a few times too:)

×

Ad
  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Arthur, I have the same problem - did you ever find a solution to this?

Thanks

Toby

Posted on Dec 14, 2010

  • 1 more comment 
  • Tom Ridchardson Jan 18, 2011

    Anyone figured what was the problem ?

  • tobywp Jan 19, 2011

    No one responded unfortuately. The partial good news though is that after leaving it unplugged for several weeks, i switched it back on just before taking it the the shop for fixing and it started working again! Very strange. I still get intermittent remote problems though - sometimes it doesn;t work at all, sometimes volume changes by itself or switches off mute by itself - ghosts in the machine!

  • Mud man May 27, 2016

    Mine did the same I just pulled optic cable out vaccummed it . Dropped it a few times turned it on and off a few times . And started working again haven't had problem again I have a sneaking suspicion it was the optic cable just at a wild guess ...??? Who knows try everything ha ha.. Talk to it maybe even I sweared at it a few times too:)

×

Ad
  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Same thing happened to me, blue dot appeared when you turned on the power at rear or plug. By flicking the rear power switch off and on slowly it sometimes worked sometimes not, I ended up keeping it on standby to avoid the problem after it worked. This lasted a few months till the house power went off one time and the blue dot came on permanently from that moment on. Just today was cutting my losses and pricing up a cheap alternative, then I though there's nothing to lose so I put the amp up on its side and let it drop onto it's top, did this on both sides. Was surprised when eventually after hooking power up it came back on. Hoovered it out as well just incase 9 years of dust had been a factor, switched off power and blue dot came on again. I managed to pull out plug and in again, it started fine so leaving it in standby. If I can't get it working some day in the future going to use the old drop tactic to try and revive. Hope this helps!

Posted on Feb 28, 2016

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

  • Contributor
  • 1 Answer

Bump!
Same problem,but any suggested solution doesnt help..

Posted on Jul 04, 2015

  • Mud man May 27, 2016

    Mine did the same I just pulled optic cable out vaccummed it . Dropped it a few times turned it on and off a few times . And started working again haven't had problem again I have a sneaking suspicion it was the optic cable just at a wild guess ...??? Who knows try everything ha ha.. Talk to it maybe even I sweared at it a few times too:)

×

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Hi,I just got the same issue: first the remote stopped working, i tryied to switch the amp off (what i never do...), and now i can't power it up again, i have this blue point on the display. Did you guys find a solution?Thanks,Pierre

Posted on Oct 06, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Same here. Same problem with unresponsive remote then once I set the unit to standby it wouldnt power up again. All I got was the single blue dot on the Dot Matrix screen.
I tried cycling the NORM/UPDATE switch on the back but it did not help.

I finally got it to work by quickly cycling the power switch on the back.
This is obviously a common problem.
Anyone know of the cause/solution ??

Posted on Feb 27, 2011

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Anyone figured what was the problem ?

Posted on Jan 18, 2011

  • 1 more comment 
  • Tom Ridchardson Jan 19, 2011

    I got news from Cambridge Audio, there's a switch at the back of the device, next to the RS232 connector, labeled "Normal/Upgrade", this switch should be in "Normal" and will fix the blue dot problem.

  • Ryan Dick
    Ryan Dick Jan 04, 2017

    Same thing hap with mine...th plug was pulled ou before I unit wa switch off at at back. Took the top cover off, check the fuses, all were good. Tried plugging it back in an turning it on, didn't work...fumbled by pushing buttons while turning th power on and off....finally worked....think it is some kind of safe mode if there is an accidental power shortage or surge. There should be a common/proper fix to this issue

  • Anonymous Sep 10, 2017

    Amazing, Tom thanks, by putting the switch to Upgrade then back to Normal I got mine to work, better than dropping it repeatedly like I did before.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya Technician can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Cambridge Audio Azur 640R AV Recorder won't switch off


Sounds like the unit is victim of a power surge. The power control board is probably damaged. You will be better off replacing the amp as having it repaired will cost more than replacing it.

Mar 02, 2014 | Cambridge Audio Azur 640R 7.1 Channel...

Tip

Cambridge Audio DV30 DVD Manual Download


Download Cambridge Audio DV30 DVD Player Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Users Guide?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Owners Manual?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Remote Codes Download

on Jul 14, 2010 | Televison & Video

Tip

Cambridge Audio DV30 DVD Remote Codes Download


Download Cambridge Audio DV30 DVD Player Remote Codes Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Remote Codes?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Remote Codesl?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player remote codes documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Manual Download

on Jul 14, 2010 | Televison & Video

1 Answer

Thinking of buying head phones have Cambridge amp but cant find socket for phones


Without knowing the model number of the Cambridge amp there is no way anyone on Fixya can help you.

Aug 21, 2013 | Cambridge Audio Audio Players & Recorders

2 Answers

Hi, just made a stupid mistake - plugged in an HDMI cable into the output HDMI port of the Azur 640R - it's gone dead on me! Changed fuse in plug, still no joy are their any other fuses / things I


As you know the out has a different pin connection so you shorted something out---no suggestions aside from having someone look at the unit--it may have a hidden protection against this or not.

How expensive is the unit to replace?

Jun 13, 2012 | Cambridge Audio 640R 7.1 Channels Receiver

Tip

Cambridge Audio DV30 Remote Codes Download


Download Cambridge Audio DV30 DVD Player Remote Codes Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Remote Codes?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Remote Codesl?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player remote codes documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Manual Download

on Jul 14, 2010 | Audio Players & Recorders

Tip

Cambridge Audio DV30 Manual Download


Download Cambridge Audio DV30 DVD Player Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Users Guide?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Owners Manual?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Remote Codes Download

on Jul 14, 2010 | Audio Players & Recorders

Tip

Cambridge Audio DV30 Remote Codes Download


Download Cambridge Audio DV30 DVD Player Remote Codes Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Remote Codes?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Remote Codesl?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player remote codes documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Manual Download

on Jul 14, 2010 | Cambridge Audio Sonata DV30 Player

Tip

Cambridge Audio DV30 Manual Download


Download Cambridge Audio DV30 DVD Player Manual


b97bd3e.jpg

Would you like to review the features of the Cambridge Audio DV30 DVD Player?

Have you lost your Cambridge Audio DV30 DVD Player Users Guide?

Would you like a digital, searchable, pdf version of the Cambridge Audio DV30 DVD Player Owners Manual?

Follow this link (& click FREE) to download a pdf version of the Cambridge Audio DV30 DVD Player documentation.

I hope that helps.
___________________________________________________
Cambridge Audio DV30 Remote Codes Download

on Jul 14, 2010 | Cambridge Audio Sonata DV30 Player

Not finding what you are looking for?

Open Questions:

Cambridge Audio 640R 7.1 Channels Receiver Logo

1,195 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cambridge Audio Audio Players & Recorders Experts

 Grubhead
Grubhead

Level 3 Expert

5309 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

74887 Answers

Are you a Cambridge Audio Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...