Intermittend high pitch noise

bergurbrag · 4193

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Offline bergurbrag

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Reply #15 on: August 16, 2023, 04:20:44 AM
Ok, thank you.

I am still waiting on the diodes so I can do the modification to the ICE.

The intermittent high pitch noise in the right channel is still there. It comes on and ends with a short even higher pitch burst. It ends like if you where turning off the water in a sink, a gradual but a short process. As I have said before this noise is not there when use a different source.

Does this tell you anything or is there something I could do to get an answer to why this is happening and what can be done to fix it.

Please help in fixing this issue.

With regards, Bergur



Offline Paul Birkeland

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Reply #16 on: August 17, 2023, 08:46:39 AM
I think it's likely that the diode modification will solve this issue.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline bergurbrag

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Reply #17 on: August 17, 2023, 09:46:19 AM
Ok, thank you.

Does this modification affect sound quality ?



Offline Paul Birkeland

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Reply #18 on: August 17, 2023, 09:54:15 AM
No, it just mitigates noise from sources that may have CPU related earth noise issues.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline bergurbrag

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Reply #19 on: August 17, 2023, 10:04:22 AM
Ok, thank you again



Offline bergurbrag

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Reply #20 on: August 21, 2023, 07:35:30 AM
Did the diode modification and dead silent

Thank you very much for your advice!

Can you be so kind as to explain in a few words how this solution works ?

The amp still has a earth connection ?

I am sending you a picture just to make sure I did it right.

Is it OK ?



Offline Paul Birkeland

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Reply #21 on: August 23, 2023, 05:39:35 AM
I'm glad that worked out for you.  Some additional information can be found here: https://forum.bottlehead.com/index.php?topic=11676.90

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man