audio problems audio problems - diyAudio
Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

audio problems
audio problems
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 20th June 2011, 05:58 AM   #1
tincat is offline tincat  United States
diyAudio Member
tincat's Avatar
Join Date: Feb 2010
Location: hills of WV
Default audio problems

i would be grateful for any thoughts on a situation w/my sound system which has me somewhat perplexed as to where to start. two of my receivers have begun to make loud scratchy and popping noises through all of three pairs of speakers. this is independent of volume or source and none of the other controls seem to influence the occurence. rain outside seems to bring this on(lightening doesn't appear to be involved). both units operate out of the same receptacle which seems to be ok. this noise will continue for a few seconds after the units are turned off and is intermittent w/no apparent connection to other devices. any ideas would be appreciated. thanx.
  Reply With Quote
Old 20th June 2011, 06:38 AM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
Mooly's Avatar
Join Date: Sep 2007
audio problems
A very big clue is you saying the noise carries on after switching off. That means the unit is running for a few seconds while the PSU capacitors discharge. I would try something else... and two receivers doing the same is a bit of a coincidence, bit too much really.

When it starts making a noise turn the volume down and disconnect everyhing (inputs, antenna turntable, turntable ground lead etc) until you are left with just the receiver and speakers. Is it still making the noise ? Now don't switch off but pull the mains plug instead to fully isolate. Does it still make the noise for a few seconds as it discharges ?
  Reply With Quote
Old 20th June 2011, 07:05 AM   #3
Andy5112405 is offline Andy5112405  United Kingdom
Join Date: Nov 2006
Location: Torpoint
Are you using same interconnects for all the tests ?

Something "common".
  Reply With Quote
Old 20th June 2011, 08:55 AM   #4
tincat is offline tincat  United States
diyAudio Member
tincat's Avatar
Join Date: Feb 2010
Location: hills of WV
thank you for your quick attentions. it is late(early) here and i am reading a very good book by Patrick O'Brian-'The Yellow Admiral', but i must retire soon or just stay up for the day. however, i should add to my initial post some details. one recever powers a pair of jbl's, or, alternatively, a pair of wharfedales. the other has a separate pair of wharfedales. the first unit began the described behavior a couple of months ago and i switched to the second unit(both were used according to my preference of the moment), which then began the behavior a couple of weeks ago. the noise is unaffected by any alteration in any control, and can be very loud at zero volume on the pot. it seems random as well. isolation is a good idea and i will remove all inputs, though the noise is there even when all sources are unpowered. a quick thing i'm going to try when i can find a suitable extension, is to pluig the units into a different circuit out of the main power box. first, however, i think i will put down the book and get some sleep. will be back later and thanx.
  Reply With Quote
Old 20th June 2011, 10:33 AM   #5
AndrewT is offline AndrewT  Scotland
diyAudio Member
Join Date: Jul 2004
Location: Scottish Borders
possibly a broken solder joint in an interconnect. The stranded wire often breaks just as it exits the solder.
regards Andrew T.
Sent from my desktop computer using a keyboard
  Reply With Quote


audio problemsHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Audio problems with P A System isaachubbard PA Systems 8 3rd September 2011 02:37 PM
Problems with HLLY Audio? walshga Vendor's Bazaar 3 13th June 2011 01:23 PM
Problems with Planet Audio Amp unky Car Audio 3 24th March 2011 07:04 AM
Marantz audio problems ShaunC Solid State 1 9th November 2003 02:48 PM

New To Site? Need Help?

All times are GMT. The time now is 04:59 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio