Help! Kenwood Basic C-2 left channel out (phono only) - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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 2nd May 2013, 02:45 AM   #1
diyAudio Member
Join Date: May 2013
Default Help! Kenwood Basic C-2 left channel out (phono only)

I just acquired this unit and it sounds great in all modes *except* phono, where the left channel is fuzzy and barely audible. Music plays just fine through my Onkyo, and switching TT interconnects going into the preamp results in no change. I've also de-oxited the heck out of the pots and switches.

Any ideas?

Last edited by Futureman; 2nd May 2013 at 03:17 AM.
  Reply With Quote
Old 2nd May 2013, 06:52 PM   #2
Mooly is offline Mooly  United Kingdom
diyAudio Moderator
Mooly's Avatar
Join Date: Sep 2007
I would look for "obvious" issues first before going to deep. Something like this could even be physical such as cracked print around a socket or selector switch.

The correct way to fault find this is simply inject a tiny signal into the left phone input and trace it through using a scope. Its literally two minutes of a job that way.

No scope ?

The circuit is a not quite so simple opamp based phono stage using a pair of FET's and transistors "in front" of the opamp.

First step without a scope is to check the DC conditions around the opamp but I suspect the problem is elsewhere tbh

You could link the left and right feeds and see if the problem is in the front end. Just isolate C11 and connect feed to C12 (the right channel opamp output)
Attached Images
File Type: jpg Capture2.JPG (115.3 KB, 31 views)
  Reply With Quote
Old 2nd May 2013, 07:43 PM   #3
diyAudio Member
Join Date: May 2013
Thanks Mooly! The Kenny is in the hands of a tech as I type. No bench fee!
  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
Kenwood Basic M1 Amplifier Rte 66 Dave Solid State 23 24th October 2016 10:45 AM
Can I have the sub woofer channel and the left and right channel as one? Boscoe Chip Amps 7 21st February 2010 05:56 PM
Kenwood basic C2 - channel out bilbospil Solid State 2 23rd January 2010 11:49 PM
Dead Left Channel on my Kenwood CI Pre-amp bulgin Analog Line Level 0 22nd September 2009 01:33 AM
Kenwood basic m2 Johnny25 Class D 0 20th January 2006 06:48 PM

New To Site? Need Help?

All times are GMT. The time now is 05:38 AM.

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