popping sound marantz sr4001

raven · 28th March 2010, 05:33 PM

i have marantz sr4001 av receiver, every time i turn the volume up or down there is kind of cracking sound on the speakers and if i turned it up to the max it shuts down with protect message. i thought it was speaker connection so i remove all speaker wires and plugged an earphone and its doing the same cracking sound thing on the earphone. It's working fine by the way if i'm only using tuner/ radio. i opened the receiver to look for any obvious burn or something and i dont find any so far. I have a service manual for this, but i dont know where to start. any help would be appreciated.

txs

Cal Weldon · 28th March 2010, 05:38 PM

This is often a static build up on the volume pot. Get some antistatic spray and ask someone how to best use it. Strange that it doesn't happen on the radio though...

raven · 06:23 PM

hi thanks for reply
this does this even when i'm turning volume through remote control,(volume knob on receiver is steady).And i quess i should had mentioned the circumstances leading to this problem: i had my ipod connected to aux input 1 ( i had this set up for about a year), and last week about half an hour of listening, i heard a series of popping sounds and my receiver shutdown with that red small led flashing near power button. since then this problem came.

Cal Weldon · 28th March 2010, 06:24 PM

ok, then we'll have to leave it to those who know more. I wonder if you have some caps going bad?

raven · 30th March 2010, 05:14 PM

i tried to look for some bad capacitors and they all seem to look fine, no burnt parts either. And just an update, it also does popping sound when i change the input selection, like from dvd to cd to tape and also when i'm changing settings like from dts to dolby to stereo, turning off equalizer and surround mode.Also i just notice that there is also popping when i'm using tuner its just not too loud compared to other inouts. So basically whenever i change setting i have this popping sound, also the pop come in conjuction with every volume digit i change and goes loud as volume is turned up and it is coming from all speakers.

28th March 2010, 05:33 PM	#1
raven diyAudio Member Join Date: Mar 2008	popping sound marantz sr4001 i have marantz sr4001 av receiver, every time i turn the volume up or down there is kind of cracking sound on the speakers and if i turned it up to the max it shuts down with protect message. i thought it was speaker connection so i remove all speaker wires and plugged an earphone and its doing the same cracking sound thing on the earphone. It's working fine by the way if i'm only using tuner/ radio. i opened the receiver to look for any obvious burn or something and i dont find any so far. I have a service manual for this, but i dont know where to start. any help would be appreciated. txs

28th March 2010, 05:38 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	This is often a static build up on the volume pot. Get some antistatic spray and ask someone how to best use it. Strange that it doesn't happen on the radio though... __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

28th March 2010, 06:11 PM	#3
raven diyAudio Member Join Date: Mar 2008	hi thanks for reply this does this even when i'm turning volume through remote control,(volume knob on receiver is steady).And i quess i should had mentioned the circumstances leading to this problem: i had my ipod connected to aux input 1 ( i had this set up for about a year), and last week about half an hour of listening, i heard a series of popping sounds and my receiver shutdown with that red small led flashing near power button. since then this problem came. Last edited by raven; 28th March 2010 at 06:23 PM.

28th March 2010, 06:24 PM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	ok, then we'll have to leave it to those who know more. I wonder if you have some caps going bad? __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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30th March 2010, 05:14 PM	#5
raven diyAudio Member Join Date: Mar 2008	i tried to look for some bad capacitors and they all seem to look fine, no burnt parts either. And just an update, it also does popping sound when i change the input selection, like from dvd to cd to tape and also when i'm changing settings like from dts to dolby to stereo, turning off equalizer and surround mode.Also i just notice that there is also popping when i'm using tuner its just not too loud compared to other inouts. So basically whenever i change setting i have this popping sound, also the pop come in conjuction with every volume digit i change and goes loud as volume is turned up and it is coming from all speakers.

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