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I have a Quad 99 amp and it has lately started making a loud pop when I turn it off. It also does this sometimes during playing of cd but much more of a cracking sound (like interference) - other times its fine.

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The protection relay could be hanging, causing this type of noise...accordianman

Posted on Jul 23, 2008

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Hi, some days ago my little daughter messed up with all possible buttons on the front of the receiver and the remote also, so in result I have the follwoing issues: - when I try to set the speakers with...


erm.... this is a strange one, the popping very loud sounds is the amplifiers turning on and lookinf for the input, so its possible the input method has been altered from original settings i would try fixing this first, im sorry i cant be any more help or any help at all to be honest lol, worst case scenario put your daughter in front of it and let her play away again. good luck : )

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Two problem don't know if they're related. I'll sometimes get the dreaded loud POP and then no sound when playing from our cable box or Ipod, I'll lose sound on the speakers in the main room but I still...


I have the same two problems! "Zone 2" works, but the main amp will make a noise and then stop working. Sometimes when I change the listening modes around it will start working. Lately, though, "zone 1" has gone out altogether.

Jan 12, 2011 | Onkyo TX-SR603X Receiver

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Makes an loud clicking/popping sound


The audio outputs are intermittently shorting to their supply and allowing DC voltage to pass - the speakers will be damaged if it continues. you can confirm this by measuring (with a dc voltmeter)at the speaker outputs for DC volts.

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Looking for jvc old receiver model jr-s501


Did you ever find a JVC JR-S501 receiver? I've got one, with a problem. It will play fine for, sometimes half an hour, or sometimes less, and then a loud "POP" sound in speakers. But then will play fine again. Blows fuses on speakers.

Jul 12, 2009 | JVC Audio & Video Receivers

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Receiver turns on and sound, when playing xbox a grenade goes off and the receiver shuts off..


If it is like a big POP and it goes out, then the amp is blown, or wires in the back are crossed. The amp might be going into protection. Most amps say PROTECT when that happens, but some just have standard breakers that shut it off when it is too loud, or wires are crossing. Check for that, and if it continues, then the amp is probably blown

Jun 17, 2009 | RCA Audio & Video Receivers

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See add details


Since the receiver eventually works, the delay circuit is failing. This is a circuit that allows the power supply to settle down before kicking in the output relay. This prevents the "pop" that was sometimes heard on older units. This should be a simple and inexpensive repair probably requiring the replacement of a couple of small capacitors in that delay/protection circuit.

Dan

Mar 09, 2009 | Sony STR-DE935

1 Answer

Onkyo SR606 - Loud Poping


It could be a number of things,
1. an electrical short in the house. Try plugging it into another circuit with an extension cord.
2. A bad RCA cable that is input from one of your sources.
3. its probably a bad unit if you have Zone one and two playing at the same time the same source, but it only happens on zone 1.
4. a bad speaker can make a poping like sound, does it happen on all speakers? unplug all but one and one at a time try to determine if the problem sticks, if not, then one of the speakers is out of phase or blown.
5. Playing music froma computer source will sometimes make a pop if your computer is slow or bogged down with checking emails..etc. mine sometimes studders PPPPPPPrioRRRRRity CCCCCLLLLLLLLEEEEERRRRANCCCEE AAAAAAALLLLPPPPPHAAAA OOOOOOONE.
it also pops real loud when booting or shutting down.
Personal note ........windows is such a hassle for Media systems.


I hope something here helps!


Charles




Dec 31, 2008 | Onkyo TX-SR606 Receiver

1 Answer

My Kenwood amplifier is having problems, whenever i turn it on. all seems well until i play some music through it, after 30seconds to a minute the music will cut off and a distinct click is sometimes...


Your amp is going into protection. The click you hear is a relay meant to protect your speakers and stereo. Check your speakers with an ohm meter for the the proper ohms ( listed on the speaker ) and physically try to push each woofer and midrange cone in gently to make sure it moves and is not stuck or frozen in place. A speaker may read correctly on an ohm meter if the woofer is ok but if the tweeter or midrange is not working it will cause the amp to go into protection mode. When you play music stick your ear up to each tweeter\midrange\woofer to ensure they are working.
Your stereo could also be the culprit although usually if it plays music it is ok as long as you are not hearing loud pops. Loud pops are voltage spikes that indicate that a transistor\IC is breaking down and will eventually short. Good luck!

barneyluc

Oct 01, 2008 | Audio & Video Receivers

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Sansui Amp


Bad supply capacitors...accordianman

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its the ic that controls the + and - voltage and there are capacitors that have leaked all the caps on that board need changing could be expensive and time consuming but its the age of it . if i was going to do that job £200 plus\

Aug 24, 2007 | Technics SA-DX940

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