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In Reply to: RE: Hafler 9500 crackling in one channel posted by Cuernavaca on June 16, 2016 at 17:07:31
Could be anything from a loose connection (internal or external) to a failing component.
first switch all the cables, inputs and speakers to the other side and listen if the crackling stays on the same (amp) channel.
Then if you're up for it try the pencil test. Take a PENCIL or wooden stick and just poke. Poke the boards, wires, connections, everything. Listen if you an reproduce the sound.
If it continues and you don't find it have it restored. Sounds like something is trying to go. And it will take something else with it!!!
Follow Ups:
I will give it a shot, I am pretty sure it's a loose connection or crack on the board. Crackling doesn't increase with volume.
Thomas
Look for lifting of the circuit tracings, recent solder joints, that kind of stuff.I think in the end you will need it restored. A nice amp so it is worth it.
I did do a little search on that amp. And they do have a history of crappy filter caps. Just the way it goes with some things.
Consider replacing them at the least.
charles
Edits: 06/17/16
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