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April 22, 2021, 06:35:17 PM

Author Topic: Headphone jack [resolved]  (Read 126 times)

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Offline joralieu

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Headphone jack [resolved]
« on: March 24, 2021, 05:13:37 AM »
My headphone jack is not working properly, got no output to the speaker terminals with the headphones unplugged. Was working for a week or so than the right channel quit and the left quit soon after.  Headphones work fine. Any ideas what could have happened?
« Last Edit: March 24, 2021, 01:41:03 PM by Paul Birkeland »

Online Paul Birkeland

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Re: Headphone jack
« Reply #1 on: March 24, 2021, 06:07:14 AM »
Can you take some photos of the headphone wiring and speaker binding post wiring and post them up here?

The terminals closest to the chassis plate on the headphone jack are the sleeve terminals and are shared between channels.  If both speaker outs don't work but both headphone outputs are OK, then I would be looking at the sleeve connections to find the problem. 

I would not just assume there is something wrong with the HP jack. 
Paul "PB" Birkeland

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Offline joralieu

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Re: Headphone jack
« Reply #2 on: March 24, 2021, 08:48:09 AM »
Here's some pics'

Online Paul Birkeland

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Re: Headphone jack
« Reply #3 on: March 24, 2021, 09:44:31 AM »
Set your meter to measure impedance, what is the resistance between the left speaker black binding post and each of the lugs where the solid colored wires connect on the HP jack?
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline joralieu

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Re: Headphone jack
« Reply #4 on: March 24, 2021, 11:01:25 AM »
Impedance, reads O.2 Ohms

Offline joralieu

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Re: Headphone jack
« Reply #5 on: March 24, 2021, 12:02:05 PM »
Never mind, working now. I put in different speaker cables. Something not right with the spades on the speaker end.
Thanks
Joe