No Left Channel

lextek · 2052

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Offline lextek

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on: January 21, 2012, 08:27:39 AM
Just finished up my Crack build.  Resistance and voltage checks are all good.  I just don't have a left channel.  If I pull the headphone connector out of the jack I get full sour (mono).  Tried a different set of tubes (used.  No difference .  LEDs are lighted.  Still a fun build.

Bob Lasky

Offline lextek

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Reply #1 on: January 21, 2012, 08:52:03 AM
OK.  Got it.  Found a less than perfect solder joint at terminal 9 the one with the capacitor and red wire.  The red wire was loose.  This thing sounds awesome with just an iPod hooked up for testing.  Just followed the wiring/circuit for the left channel.  Speedball next.........

Bob Lasky

Offline porcupunctis

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Reply #2 on: January 21, 2012, 08:57:12 AM
Start troubleshooting from the tip contact on the headphone jack.  Based on your description, it sounds like when you start pulling the jack out, the ring contact is straddling the ring and tip of the headphone jack and that is when you here the mono sound.  

Well, you beat me to it.  Glad you got it working. 

Randall Massey
Teacher of Mathematics
Lifetime audio-electronics junkie

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