Question about Cambridge Audio Azur 640T Receiver

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Cambridge azur tuner 640t screen flashing

After about 1hour turns itself off and screen starts flashing

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Posted on Jan 02, 2017

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SOURCE: NO SOUND FROM DIGITAL TUNER

Hi Guys, I have been doing some research on this problem and found that during manufacture of the Cambridge Audio DAB range that they had used substandard voltage regulators in these units. I have repaired a number of theses all with similar faults and every time replacing the 5v voltage regulators with LM340T5s and capacitor upgrade from 2200uf 16v to 4700uf 16v this will solve all the problems.

Posted on Apr 14, 2012

dunnbiker
  • 8546 Answers

SOURCE: Dear mr I got a problem .i have a cambridge tuner

Excessive heat would be lack of sufficient cooling air. Give it room to breath.

Generally speaking, an amp protects itself from heat, shorts and overloads. Check for loose speaker connections.


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

Posted on Feb 01, 2011

  • 256 Answers

SOURCE: My Cambridge Audio 640T (tuner) will not turn on, either through remote or panel. The standby light is on. What could be the problem? John

That is not something that you can guess at,

Posted on Dec 06, 2012

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1 Answer

Thanks, this is answered.


Okay, thank you for the message.

Apr 17, 2012 | Cambridge Audio Azur 640T Receiver

2 Answers

I have tuner AUDIO CAMBRIDGE 640T NOT AMPLIFIER!!! PLEASE ASK GURU!!!!!!I


The question is - what can cause the problem seen on the photo below? CA Azur 640T - shows only the symbols after switching it on.
tuner-audio-cambridge-1tdyncq0auxambxk4y5ggead-4-0.jpg

Feb 06, 2011 | Cambridge Audio Azur 640T Receiver

1 Answer

Dear mr I got a problem .i have a cambridge tuner 640T it plays only for 3 4 minutes all functions work and after that the screen is flashing and tuner stop working.(power stops).i got feeling that...


Excessive heat would be lack of sufficient cooling air. Give it room to breath.

Generally speaking, an amp protects itself from heat, shorts and overloads. Check for loose speaker connections.


Overloads can be from excessive periods of high output and shorts would be wiring issues or a speaker blowing up.


You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.


If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.


If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced hands-on tech.

Feb 01, 2011 | Cambridge Audio Azur 640T Receiver

1 Answer

I want to buy a trasformer for cambridge audio radio ammplifiare azur 540 v2


Cambridge Audio will be the only people that have spares
Check their website

Aug 26, 2010 | Cambridge Audio Azur 540A Amplifier

2 Answers

NO SOUND FROM DIGITAL TUNER


Hi Guys, I have been doing some research on this problem and found that during manufacture of the Cambridge Audio DAB range that they had used substandard voltage regulators in these units. I have repaired a number of theses all with similar faults and every time replacing the 5v voltage regulators with LM340T5s and capacitor upgrade from 2200uf 16v to 4700uf 16v this will solve all the problems.

Nov 28, 2009 | Cambridge Audio Azur 640T Receiver

1 Answer

The left channel in my Cambridge Azur 640 amplifier keeps cutting out. Wierdly I can often 'shock' it back to life by quickly turning up the volume a lot. Any ideas?


have the volume control cleaned by a spray of electronic contact cleaner. If the carbon coating material is already wiped-out due to use, have the part replaced

Aug 03, 2009 | Cambridge Audio Azur 640A Amplifier

1 Answer

Problem with azur 640a amp


protection mode activated to protect your amp from a problem.
please disconnect all your speaker from the amp and check if it is fine start to connect your speaker one by one until you find the bad one which make the problem-change its cable first and then speaker itself.if the problem still you will have a problem in amp.

Jul 08, 2008 | Cambridge Audio Azur 640A Amplifier

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