I have an audio azur 540r receiver. My problem is that sametimes it shuts down for no apparant reason. - First I thought it had something to do with that it couldn't get rid of his heat, but sometimes it shuts down when it's completely cold. - I already reset a couple of times. - My speakers are new (also cambridge audio S70) and before it shuts down, they play fine, so that should be no problem. - I heard of some software malfunction where the solution was: put treble to +1, also makes no difference. It's driving me crazy!

That really depends on your personal goals and your companies goals.. I recommend going to Microsoft Virtual Academy. It's free and online and there is free courses with certificates of completion on Azure... That way you will get a good idea on if it is something you want to invest in for the paid certification/badge versions of Azure. Do it quickly though because MVA is making changes and a lot of the free courses are going away. Though there is apparently a new version of the free MVA coming out soon too.

Could have a problem in the power supply section. Check for open diodes and bad capacitors.

Register and download the manual for free at retrevo.com

http://www.retrevo.com/s/Cambridge-Audio-540R-Receivers-review-manual/id/2536dj197/t/1-2/

"SW" stands for SubWoofer.

Page 8...

Shows the currently active channels depending on decoding mode and source material. Icons lit indicate active channels in the source material. Icons with a box around them indicate actual channels being output separately.

Search for the word "balance". Page 8 again (circled 8)...

Lights when the Front Left and Right speaker outputs have been set to different levels in the OSD, i.e. a balance adjustment has been made.

You can look at the relative levels of all channels as described on Page 14.

Receiver Rec Out 1 or 2 to the Teac Recorder Rec (Line)-In;
Receiver Tape In from the Teac Recorder Play (Line)-Out.

http://www.retrevo.com/support/Cambridge-Audio-540A-Amps-manual/id/21962dj979/t/2/

This will be the large Electrolytic Capacitors in the Power Supply. You can't miss them. They will over 4700uf or around that in value. Replace them all, even if only one has gone. I think what your hearing is the 50/HZ hum from the mains getting in.

When the word protect shows up it means trouble. The circuit that shows the warning and shuts the unit from working has detected a short somewhere in the unit. More than likely one of the output transistors but not always. Have you had a power failure lately? Lightning strike? Power bump? If so the problem could be in the Low Voltage power supply. First unplug the unit. Take the bottom off if it has a panel which can be removed separate from the complete bottom. Under the panel should be the output transistors. Check to see if any are shorted with a DMM. If you find any they will need to be replaced. If you do not find any you will probably need a competent tech to troubleshoot the unit. Let me know if you need anymore help.

hardrocko

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Reasons: 1. Short in the wire, speaker, or amplifier 2. Amplifier malfunction 3. Overload of the amplifier 4. Overload of the speaker
Listening to audio at loud levels requires more power obviously. But the speakers and amplifier may not be rated or capable to handle it due to age or design.

check your speaker wires for short, try to turn it on without speakers connected, if all connections and speakers seem ok the problem is internal witch can go from blown power supply to shorted output devices and everything in between , and as always look for repair shop in your area, do not attempt to do it yourself, fire hazard and electric shock are the things we all want to avoid ;)

I had the same problem and have solved it bij resetting it.
Try the small hole above the powerswitch.

Good luck.

you should check out the web site of thales or Ultra for information about both frequencies (Radio and hydrophone).
and you should check the frequency setting option, they all have it.
here is a link that will tell you the Freq. http://www.ultra-scs.com/pdfs/pdf_sonobuoy.pdf