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6n11 tube headphone amp
6n11 tube headphone amp
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Old 10th February 2013, 01:47 PM   #11
Stefkorn is offline Stefkorn  United Kingdom
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Join Date: Mar 2012
Location: Gosport, Hampshire
Quote:
Originally Posted by dobiejoe View Post
Still no sound out of left side.

Replaced all resisters with 1%
replaced trimmer pots with 2K and tried 10K
both heater amps work and both sides of the tube amps work.

Anything else I need to try?
Check whether the output jack has a faulty connection, check the output capacitor, check the pcb for dry solder joints. As suggested above, a scope will be very useful at this point.
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Old 13th February 2013, 05:40 PM   #12
dobiejoe is offline dobiejoe  United States
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Join Date: Aug 2012
Location: Tampa FL
6n11 tube headphone amp
anybody?
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Old 13th February 2013, 05:41 PM   #13
dobiejoe is offline dobiejoe  United States
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Join Date: Aug 2012
Location: Tampa FL
6n11 tube headphone amp
I have no scope and can't throw parts at it all day..
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Old 15th February 2013, 06:19 PM   #14
raweseus is offline raweseus
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Join Date: Nov 2012
Try turning the device off, and using the ohm meter with probes as a way to check for breaks in the circuit.

With the device on, you can also input signal into it, and simply use multimeter to check for voltage, even with music playing left and right paths should still have approximately same voltage at each corresponding node.

I suggest less of a "replace parts" methodology and more of a investigate what exactly is wrong with it approach.
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