One channel silent - until you increase the volume slightly - on two different amps! - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

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 25th June 2012, 10:36 AM   #1
diyAudio Member
Join Date: Apr 2010
Question One channel silent - until you increase the volume slightly - on two different amps!


I have encountered two different integrated amplifiers that only work on one channel immediately upon startup - but the silent channel kicks in without issue when you crank the volume control a little bit. Even increasing the volume on the source (computer volume control, or MP3 player) is enough to kick start the other channel.

What could possibly be causing this kind of thing?

It's not a problem with the potentiometer (it's perfect), or bad solder joints, all that's fine. If you turn the amp off when everything's working right, and then immediately power it up again, the channel is silent again - so it's not a "warm-up" issue, either.

Idle current's been adjusted on both amps. One has completely new electrolytic capacitors throughout. All potentiometers and switches are perfectly clean and without issue. The two amps have nothing in common, aside from this similar problem.

Last edited by Coconuts 500; 25th June 2012 at 10:41 AM.
  Reply With Quote
Old 25th June 2012, 10:42 AM   #2
diyAudio Member
east electronics's Avatar
Join Date: Jan 2006
Location: Athens GREECE
Replace output relay ...

to ensure the failure while in low listening level , and while the one ch does not operate tick over the relay with a screw driver to see if it contacts after that...

replace the relay
  Reply With Quote


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
When Volume up - left channel sound prob ? Krokotam_ Solid State 7 21st October 2008 02:55 AM
strange sound from transformer when load increased jegandren Power Supplies 8 21st September 2008 10:29 AM
Sonic T-amp, no sound on left channel on low volume willmans Class D 4 7th October 2007 05:33 PM
Increased Volume & Broken TV tomjack Everything Else 4 5th May 2006 05:02 PM
Horrible sound on startup bjorn.lindberg Parts 4 23rd October 2005 09:33 AM

New To Site? Need Help?

All times are GMT. The time now is 04:06 PM.

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

Content Relevant URLs by vBSEO 3.3.2