Question about Cambridge Audio Azur 640T Receiver

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Re: cambridge audio 640t tuner i turn the tuner on and then after a few minutes it switches itself off for no reason

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Posted on Jan 02, 2017

  • 99 Answers

SOURCE: NO SOUND FROM DIGITAL TUNER

take the lid off and there should be a reset button somewhere on the circuit board, i had a cambridge audio D500 DAB with the same problem and once i pressed reset all was well.

hope this helps?

Posted on Jul 01, 2010

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

cadillac02
  • 318 Answers

SOURCE: i have tuner AUDIO CAMBRIDGE

Azur 640T flagship or 640T (version2)?

What is you question and I'll see if I can help you?
Touch controls offering easy access to DAB and FM stations Receives traditional analogue transmissions and RDS Wolfson WM8716 24-bit/192kHz DAC Coaxial and digital outputs Natural Contour Technology (NCT) Low resonance, acoustically damped chassis improves sonic performance Stylish all-metal casework with a solid aluminium front panel Slim-line Azur remote control with aluminium top panel

Posted on Feb 06, 2011

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Thanks, this is answered.


Okay, thank you for the message.

Apr 17, 2012 | Cambridge Audio Azur 640T Receiver

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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

Volume levels vary for no apparent reason. From normal to quiet and back at what seems to be random time intervals. No jiggling of any wires makes a difference. The speakers are old and I'm wondering if...


If you are using it to watch cable TV stations, They may have different audio levels between programming. Also you want to check and not use dolby when atching standard TV channels

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Check to see that there isn't an alarm function selected, as the reason it's turning on by itself.

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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

UNIT TURNING ON BY ITSELF


check and see if the power button is not binding tightly on the body of the set.if everything is okay call a tech you are having a short in the power supply good luck.

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